Reeks 2 — Wetenskap & WerklikheidSeries 2 — Science & Reality

Sessie 3 — Die Heelal het 'n BeginSession 3 — The Universe Had a Beginning

— deurby Attie Retief

Die Heelal het ‘n Begin

Inleiding

Vir die grootste deel van die Westerse intellektuele geskiedenis het baie denkers aangeneem dat die heelal ewig is. Aristoteles het geleer dat die kosmos altyd was en altyd sal wees. Selfs baie moderne wetenskaplikes het tot diep in die twintigste eeu geglo dat die heelal staties en onveranderlik is, ‘n ewige agtergrond waarbinne sterre en planete hul gang gaan. Die idee van ‘n begin was vir baie ongemaklik, want dit het onmiddellik ‘n vraag geopen wat die wetenskap nie maklik kon beantwoord nie: Wat het die heelal laat begin?

En tog het die twintigste eeu alles verander. Deur ‘n reeks ontdekkings, wiskundig, waarnemend en eksperimenteel, het die wetenskap tot ‘n gevolgtrekking gekom wat eeue se filosofiese aannames omvergegooi het: die heelal is nie ewig nie. Dit het ‘n begin gehad. Daar was ‘n grens waarby tyd, ruimte, materie en energie tot stand gekom het.

Hierdie ontdekking is een van die mees teologies beduidende wetenskaplike bevindings in die geskiedenis. As die heelal ‘n begin het, is dit nie selfbestaande nie. Nie die uiteindelike werklikheid nie. In die taal van Reeks 1: kontingent, afhanklik van iets anders vir sy bestaan.

In Reeks 1, Sessie 3, het ons die groot vraag gestel: “Hoekom is daar iets eerder as niks?” Alles wat ons waarneem is kontingent. Die Beginsel van Voldoende Rede dryf ons om te soek na ‘n uiteindelike verduideliking, en daardie verduideliking moet lê in ‘n noodsaaklike werklikheid: God as die grond van bestaan. Daardie argument was suiwer filosofies. Dit het nie afgehang van wetenskaplike ontdekkings nie.

Maar nou sien ons iets merkwaardigs: die wetenskap het onafhanklik tot ‘n bevinding gekom wat presies pas by wat die filosofie en die Skrif altyd geleer het. Die heelal is nie selfverklarend nie. Dit het ‘n begin. Dit is geskep.

‘n Woord van helderheid voordat ons voortgaan. Ons redeneer nie vanaf neutrale grond na God toe nie, asof die bewyse ons eers moet oortuig van wat ons nog nie weet nie. Die Skrif is duidelik: “Die hemele vertel die eer van God” (Ps. 19:1), en wat van God geken kan word, is vir alle mense openbaar, “want God het dit aan hulle geopenbaar” (Rom. 1:19–20). In Reeks 1 het ons reeds geleer wie God is: die noodsaaklike, ewige Skepper. Wat ons nou in die kosmologie ontdek, is nie ‘n nuwe argument wat daardie waarheid moet bewys nie. Dit is die bevestiging van wat Genesis 1:1 altyd al verkondig het: “In die begin het God die hemel en die aarde geskep.” Die wetenskap ruim intellektuele struikelblokke uit die pad, en daarvoor is ons dankbaar. Maar dit is die Heilige Gees wat harte oopmaak, nie ons argumente nie.

Die Ontdekking van die Oerknal

Einstein se Algemene Relatiwiteitsteorie (1915)

Die verhaal begin met wiskunde. In 1915 het Albert Einstein sy Algemene Relatiwiteitsteorie gepubliseer, een van die grootste intellektuele prestasies in die geskiedenis van die mensdom. Hierdie teorie het ons verstaan van swaartekrag verander. Swaartekrag is nie meer ‘n krag wat oor ‘n afstand werk nie; dit is die kromming van ruimte-tyd self deur massa en energie.

Maar Einstein se eie vergelykings het iets onthul wat hom diep ongemaklik gemaak het. Die vergelykings het getoon dat die heelal dinamies is. Dit kan nie staties bly nie. Dit moet óf uitdy, óf inkrimp. ‘n Statiese, ewige heelal is wiskundig onstabiel binne die raamwerk van die Algemene Relatiwiteit.

Einstein het dit nie aanvaar nie. Hy was so oortuig dat die heelal ewig en onveranderlik moes wees, dat hy ‘n ekstra term in sy vergelykings ingevoeg het: die sogenaamde kosmologiese konstante (lambda, Λ), spesifiek om die heelal staties te hou. Hierdie term het as teengewig gedien teen swaartekrag, sodat die heelal nie inval of uitdy nie.

Jare later, toe die bewyse vir ‘n uitdyende heelal oorweldigend geword het, het Einstein hierdie toevoeging sy “grootste blunder” genoem. Hy het sy eie wiskunde gewantrou omdat die gevolge te radikaal gelyk het. Die heelal wat sy vergelykings beskryf het, was nie die ewige, stille kosmos wat hy verwag het nie. Dit was ‘n heelal in beweging, ‘n heelal met ‘n geskiedenis, en dus, by implikasie, ‘n begin.

Die wiskunde het die waarheid gewys, maar die wetenskaplike het dit eers probeer ontkom. Hoekom? Omdat ‘n begin ongemaklike vrae stel. As die heelal nie altyd daar was nie, waar kom dit vandaan? Dis ‘n vraag buite die fisika. ‘n Metafisiese vraag. En vir baie was dit ‘n vraag wat te na aan teologie gekom het.

Friedmann en Lemaître: Die Heelal Dy Uit

Dit was nie Einstein self wat die implikasies van sy teorie ten volle deurdink het nie. Dit was twee ander wetenskaplikes, amper gelyktydig, wat die stap geneem het om te sê: die vergelykings beteken wat hulle sê. Die heelal dy uit.

Alexander Friedmann, ‘n Russiese wiskundige en kosmolooog, het in 1922 oplossings vir Einstein se veldvergelykings gepubliseer wat getoon het dat die heelal kan uitdy of inkrimp. Friedmann se modelle was wiskundig korrek, maar Einstein het dit aanvanklik as ‘n fout beskou. (Hy moes later erken dat Friedmann reg was.)

Maar die mees merkwaardige figuur in hierdie verhaal is Georges Lemaître, ‘n Belgiese Katolieke priester wat ook ‘n briljante fisikus was. In 1927 het Lemaître, onafhanklik van Friedmann, dieselfde gevolgtrekking bereik: die heelal dy uit. Maar hy het verder gegaan. As die heelal uitdy, was dit vroeër kleiner. Speel die geskiedenis terug soos ‘n film wat jy terugspoel, en alles kom nader en nader aan mekaar, totdat jy ‘n punt bereik waar alle materie en energie in ‘n onvoorstelbaar digte, klein beginpunt saamgepers was.

Lemaître het dit die “oer-atoom” (primeval atom) genoem: ‘n kosmologiese ontploffing vanuit hierdie oer-toestand. ‘n Begin van alles.

Hier is ‘n man wat priester en fisikus was, wat die wiskunde gevolg het tot sy logiese gevolgtrekking, en wat verkondig het dat die heelal ‘n begin gehad het. Hy het nie by die Bybel begin en probeer om die wetenskap in te pas nie. Hy het by die fisika begin en ontdek dat die wetenskap na dieselfde rigting wys as Genesis 1:1.

Toe Lemaître sy idee vir Einstein voorgelê het, was Einstein se reaksie veelseggend. Hy het gesê: “Vos calculs sont corrects, mais votre physique est abominable” — “U berekeninge is korrek, maar u fisika is afskuwelik.” Einstein het die wiskunde erken, maar die gevolge verwerp. Die idee van ‘n begin was vir hom te ongemaklik.

Hierdie weerstand teen die idee van ‘n begin was nie uniek aan Einstein nie. Dit was ‘n breë gevoel in die wetenskaplike gemeenskap. ‘n Begin het teïstiese implikasies. As die heelal nie ewig is nie, as dit ‘n oorsaak het, staan ons voor ‘n vraag wat die naturalistiese wêreldbeskouing nie maklik kan beantwoord nie.

Edwin Hubble se Waarnemings (1929)

Terwyl Friedmann en Lemaître die teorie uitgewerk het, het die empiriese bevestiging gekom van ‘n onverwagte kant. Edwin Hubble, die Amerikaanse astronoom, het in 1929 met die groot teleskoop op Mount Wilson iets ontdek wat die kosmologie vir altyd sou verander.

Hubble het die lig van verre sterrestelsels bestudeer en opgemerk dat die lig konsekwent na die rooi kant van die spektrum verskuif was, ‘n verskynsel wat bekendstaan as rooiverskuiwing (redshift). Wanneer ‘n ligbron van jou af wegbeweeg, word die golflengte van sy lig uitgerek en dit verskuif na die rooi kant van die spektrum. (Dieselfde beginsel as wanneer ‘n ambulans se sirene laer klink wanneer dit van jou af wegry: die Doppler-effek.)

Hubble het ontdek dat feitlik alle sterrestelsels van ons af wegbeweeg, en hoe verder hulle is, hoe vinniger beweeg hulle weg. Die heelal dy uit. Nie dat die sterrestelsels deur die ruimte vlieg soos skrapnel na ‘n ontploffing nie, maar dat die ruimte self uitrek, soos kolle op ‘n ballon wat al groter geblaas word. Elke kol (sterrestelsel) beweeg van elke ander kol af weg, nie omdat hulle self beweeg nie, maar omdat die ballon (die ruimte) uitrek.

Hierdie waarneming het Lemaître se teorie bevestig. Die heelal dy uit. Spoel die proses terug, en die heelal was vroeër kleiner, digter, warmer. Gaan ver genoeg terug, en jy bereik ‘n punt waar alles begin het.

Die heelal het ‘n geskiedenis. Dit is nie ewig en onveranderlik nie. Dit het ‘n begin gehad.

Die Kosmiese Mikrogolf-Agtergrondstraling (1965)

Die mees dramatiese bevestiging van die Oerknal het in 1965 gekom. Amper per ongeluk.

Arno Penzias en Robert Wilson, twee radio-astronome by Bell Laboratories in New Jersey, was besig om ‘n sensitiewe antenne te kalibreer vir satellitkommunikasie. Hulle het ‘n aanhoudende, lae-vlak geruis opgepik wat hulle nie kon verklaar nie. Dit het van elke rigting gekom. Nie van ‘n spesifieke ster of sterrestelsel nie, maar van die hemel self, eweredig verspreid in alle rigtings.

Hulle het eers gedink dit was ‘n tegniese fout. Hulle het selfs duiwe van die antenne af verjaag, want hulle het gewonder of die geruis van duiwemis afkomstig was. Maar die sein het gebly. Dit was oral. Altyd dieselfde. En dit het ooreengekom met presies die tipe straling wat teoretiese fisici voorspel het as die oorblyfsel van die Oerknal.

Wat hulle ontdek het, was die kosmiese mikrogolf-agtergrondstraling (KMA), die “nagalm” van die skepping. Toe die heelal nog jonk en geweldig warm was, was alle materie en energie in ‘n digte, gloeiende plasma. Soos die heelal uitgedrei en afgekoel het, is hierdie straling “vrygelaat” en het dit die heelal begin vul. Oor biljoene jare het dit afgekoel tot mikrogolwe. Dit is presies wat Penzias en Wilson opgepik het.

Hierdie ontdekking was ‘n keerpunt. Nie meer ‘n teorie of ‘n wiskundige model nie. Daar was ‘n fisiese, meetbare oorblysel van die begin van die heelal. Ons kan, letterlik, die nagalm van die skepping hoor.

Die straling wat jou televisie as “sneeu” sou wys (in die ou dae van analoog-televisie), is deels afkomstig van hierdie kosmiese agtergrondstraling. ‘n Fraksie van daardie geruis is die laaste fluistering van die oomblik toe die heelal tot stand gekom het. Ons leef in die nagalm van die skepping.

Penzias en Wilson het die Nobelprys vir Fisika in 1978 ontvang vir hierdie ontdekking. Penzias het later gesê: “The best data we have are exactly what I would have predicted had I nothing to go on but the first five books of Moses, the Psalms, and the Bible as a whole.”

Die Ironie van Fred Hoyle

Daar is ‘n besondere ironie in die geskiedenis van die kosmologie.

Die term “Big Bang” (“Oerknal”) is nie deur ‘n voorstander van die teorie bedink nie. Dit is gemunt deur Fred Hoyle, ‘n Britse astronoom en oortuigde ateïs, tydens ‘n BBC-radioprogram in 1949. Hoyle het die term as spotnaam gebruik. Hy het die idee van ‘n begin belaglik gevind en dit minagtend ‘n “big bang” genoem.

Hoekom was Hoyle so gekant teen die Oerknalteorie? Omdat hy die teïstiese implikasies daarvan ingesien het. As die heelal ‘n begin het, is dit makliker om te argumenteer dat dit ‘n Skepper het. Hoyle het dit openlik erken. Hy het verkies om die Bestendige Toestand-model (Steady State model) te verdedig, wat geleer het dat die heelal ewig is en dat nuwe materie voortdurend spontaan ontstaan om die digtheid konstant te hou soos die heelal uitdy.

Hoyle se model was nie dom nie. Dit was ‘n ernstige wetenskaplike voorstel. Maar dit het ‘n duidelike ideologiese motivering gehad: om die implikasie van ‘n begin te vermy. Hoyle het selfs erken dat die Oerknalteorie hom herinner aan die Bybelse skeppingsverhaal, en dat dit hom gesteur het.

Die ironie? Die kosmiese mikrogolf-agtergrondstraling het Hoyle se model finaal weerlê. Die heelal het ‘n begin, en Hoyle se spot het die naam geword waarmee die hele wêreld hierdie begin ken.

Hierdie geskiedenis wys dat wetenskaplike teenstand teen die begin van die heelal nie altyd suiwer wetenskaplik gemotiveer was nie. Soms het filosofiese en ideologiese vooroordele ‘n rol gespeel. Die weerstand teen ‘n begin was, vir sommige, weerstand teen die moontlikheid van ‘n Skepper.

Die Borde-Guth-Vilenkin-stelling (2003)

Na die oorspronklike bevestiging van die Oerknal het sommige kosmoloe probeer om die begin te ontduik. Hulle het modelle voorgestel waarin die Oerknal nie werklik die absolute begin was nie. Miskien was daar iets “voor” die Oerknal. Miskien het die heelal deur ewige siklusse van uitdying en inkrimping gegaan. Miskien is ons heelal net een van baie in ‘n ewige multiversum.

In 2003 het drie prominente kosmoloe, Arvind Borde, Alan Guth en Alexander Vilenkin, ‘n stelling bewys wat hierdie ontduikingsroetes afgesluit het. Die Borde-Guth-Vilenkin-stelling (BGV-stelling) bewys dat enige heelal wat gemiddeld oor sy geskiedenis uitdy, ‘n verlede-ruimte-tyd-grens moet hê. Met ander woorde: ‘n begin.

Hierdie stelling is merkwaardig in sy algemeenheid. Dit maak nie saak wat die spesifieke fisika van die vroeë heelal was nie. Dit maak nie saak of die heelal deur inflasie gegaan het of nie. En as daar ‘n multiversum is wat gemiddeld uitdy (en alle bekende modelle veronderstel dit), dan het die multiversum self ‘n begin.

Alexander Vilenkin het dit onomwonde gestel:

“All the evidence we have says that the universe had a beginning.”

En elders:

“It is said that an argument is what convinces reasonable men and a proof is what it takes to convince even an unreasonable man. With the proof now in place, cosmologists can no longer hide behind the possibility of a past-eternal universe. There is no escape.”

Die gewig van hierdie stelling moet waardeer word. Dit is nie ‘n teologiese argument nie. Dit is ‘n wiskundige bewys, gepubliseer in ‘n eweknie-beoordeelde fisika-tydskrif, deur drie vooraanstaande kosmoloe van wie geen een ‘n teïs is nie. Vilenkin is self ‘n agnostikus. Guth is een van die argitekte van die inflasionêre kosmologie. Hulle het nie probeer om die bestaan van God te bewys nie. Hulle het die wiskunde gevolg tot sy logiese gevolgtrekking.

En daardie gevolgtrekking is: die heelal het ‘n begin.

Wat beteken “begin” hier? Nie dat daar ‘n oomblik in tyd was “voor” die begin nie, want tyd self het met die begin tot stand gekom. Dit beteken dat die verlede eindig is, dat jy nie oneindig ver terug in die tyd kan gaan nie. Daar is ‘n grens, ‘n punt waarby die heelal, insluitend tyd self, begin het om te bestaan.

Vir die materialistiese wêreldbeskouing is dit ‘n ernstige uitdaging. As die heelal altyd daar was, kon ‘n mens argumenteer dat dit geen verduideliking nodig het nie, dat dit net ‘n “brute fact” is, ‘n kaal feit sonder rede. Maar as die heelal ‘n begin het, is dit moeilik om te ontkom aan die vraag: Wat het dit veroorsaak?

Die Kalām Kosmologiese Argument

Die Kalām kosmologiese argument is een van die eenvoudigste argumente in die filosofie van die godsdiens. Dit is in sy moderne vorm geformaliseer deur die filosoof William Lane Craig, maar het diep wortels in die Middeleeuse Islamitiese filosofie (veral by denkers soos al-Ghazali en al-Kindi) en is ten volle versoenbaar met klassieke Christelike teïsme. (Craig self is ‘n Molinis, ‘n teologiese tradisie wat op bepaalde punte van die Gereformeerde tradisie verskil, maar die Kalām-argument self is onafhanklik van sy spesifieke teologie en werk volledig binne die raamwerk van klassieke teïsme en die Gereformeerde belydenis.)

Die argument het drie eenvoudige stappe:

1. Alles wat begin bestaan, het ‘n oorsaak.
2. Die heelal het begin bestaan.
3. Dus het die heelal ‘n oorsaak.

Premisse 1: Alles wat begin bestaan, het ‘n oorsaak

Hierdie premisse lyk amper te vanselfsprekend om te verdedig. Dinge verskyn nie sonder rede nie. As jy soggens wakker word en daar staan ‘n perd in jou sitkamer, aanvaar jy onmiddellik dat daar ‘n verduideliking is. Jy oorweeg nie vir ‘n oomblik dat die perd uit niks tot stand gekom het nie.

Die beginsel dat iets nie uit niks kan ontstaan nie (ex nihilo nihil fit, “uit niks, niks”) is een van die grondliggende beginsels van rasionele denke. Dit onderlê alle wetenskap, alle geskiedkunde, alle alledaagse logika. Verwerp dit, en jy het geen rede om enigiets te verduidelik nie, want dan kan enigiets op enige tydstip sonder rede uit niks verskyn.

Tog het sommige skeptici hierdie premisse bevraagteken. Die mees algemene beswaar kom van die kwantummeganika: “Maar subatomiese deeltjies ‘verskyn’ spontaan in ‘n kwantumvakuum!” Ons kom hieronder hierop terug, maar ‘n kwantumvakuum is nie “niks” nie. Dit is ‘n fisiese toestand met energie, wette en struktuur. Deeltjies wat uit ‘n kwantumvakuum “verskyn”, is fluktuasies binne ‘n reeds bestaande fisiese raamwerk, nie iets wat uit absolute niks tot stand kom nie.

Absolute niks, geen ruimte, geen tyd, geen energie, geen wette, geen potensiaal, geen kwantumveld, kan niks voortbring nie. Soos Leibniz dit gestel het: “Hoekom is daar iets eerder as niks? Want niks is eenvoudiger en makliker as iets.” As daar werklik niks was, sou daar vir ewig niks gewees het.

Premisse 2: Die heelal het begin bestaan

Hierdie premisse word ondersteun deur twee soorte bewyse: filosofiese argumente en wetenskaplike getuienis.

Filosofiese argumente:

Die idee van ‘n werklike, voltooide oneindige verlede is filosofies problematies. ‘n Werklike oneindigheid kan nie deur opeenvolgende toevoeging voltooi word nie. Jy kan nie tot oneindig tel deur een vir een by te voeg nie. As die verlede werklik oneindig was, sou die huidige oomblik nooit bereik kon word nie, want jy sou ‘n oneindige aantal oomblikke moes deurleef het om hier te kom. Dis soos om te probeer om ‘n biblioteek met oneindig baie boeke volledig deur te lees. Jy kan dit nooit klaarmaak nie, en tog beweer ons dat ons vandag “klaar” is met die verlede.

Wetenskaplike getuienis:

Soos ons gesien het, ondersteun die Algemene Relatiwiteitsteorie, Hubble se waarnemings, die kosmiese mikrogolf-agtergrondstraling en die BGV-stelling almal die gevolgtrekking dat die heelal ‘n begin gehad het. Die wetenskaplike getuienis het oor die afgelope eeu konsekwent in een rigting gewys: die verlede is eindig.

Gevolgtrekking: Die heelal het ‘n oorsaak

As die twee premisses waar is, volg die gevolgtrekking onvermydelik: die heelal het ‘n oorsaak. Maar wat kan ons oor hierdie oorsaak aflei?

Hier word die argument besonder interessant. As die oorsaak die hele heelal tot stand gebring het, alle materie, alle energie, alle ruimte en alle tyd, dan moet hierdie oorsaak self buite materie, energie, ruimte en tyd staan. Ons kan dus aflei dat die oorsaak van die heelal die volgende eienskappe moet hê:

• Tydloos — want tyd self het met die heelal begin. Die oorsaak kan nie binne tyd bestaan voor daar tyd was nie.
• Ruimteloos — want ruimte self het met die heelal begin. Die oorsaak bestaan nie “iewers” in die fisiese ruimte nie.
• Immaterieel — want alle materie en energie het met die heelal begin. Die oorsaak is nie fisies nie.
• Enorm kragtig — want dit het die hele heelal tot stand gebring.
• Persoonlik — en hierdie punt is kritiek.

Hoekom persoonlik? Oorweeg dit: as die oorsaak tydloos en onveranderlik is, hoe kan ‘n tydelike gevolg (die heelal) ooit tot stand kom? As ‘n werkende oorsaak noodsaaklik en ewig is, sou jy verwag dat die gevolg ook ewig is. As die voorwaardes vir die heelal se bestaan altyd teenwoordig was, hoekom bestaan die heelal nie altyd nie?

Die enigste manier om dit te verklaar, is as die oorsaak ‘n vrye agent is, ‘n wese met die vermoë om te kies om te skep. ‘n Persoonlike wese kan ‘n nuwe gevolg in stand bring deur ‘n vrye wilsbesluit, selfs al het dit die mag gehad om dit altyd te doen. ‘n Onpersoonlike oorsaak het nie hierdie vermoë nie. As die voorwaardes altyd vervul is, sou die gevolg altyd bestaan.

Met ander woorde: die oorsaak van die heelal is tydloos, ruimteloos, immaterieel, enorm kragtig en persoonlik. Dit is presies wat die klassieke Christelike tradisie altyd oor God gesê het. Nie ‘n “god van die gapings” nie, maar ‘n logiese afleiding uit die aard van die oorsaak self.

Eerlike Omgang met Besware

‘n Eerlike intellektuele gesprek vereis dat ons die sterkste besware teen hierdie argument ernstig neem.

Beswaar 1: Kwantumvakuumfluktuasies

Sommige het geargumenteer dat in die kwantummeganika deeltjies “uit niks” kan verskyn, sogenaamde kwantumvakuumfluktuasies. As deeltjies sonder oorsaak kan ontstaan, hoekom nie die hele heelal nie?

Die antwoord is dat ‘n kwantumvakuum nie “niks” is nie. Dit is een van die algemene denkfoute in hierdie debat. ‘n Kwantumvakuum is ‘n fisiese toestand: dit het energie, dit gehoorsaam wette, dit het ‘n struktuur. Wanneer deeltjies in ‘n kwantumvakuum “verskyn”, gebeur dit binne ‘n reeds bestaande fisiese raamwerk met spesifieke eienskappe. Nie skepping uit niks nie, maar ‘n proses binne ‘n reeds bestaande werklikheid.

Om die heelal uit ‘n kwantumvakuum te probeer verklaar, skuif die vraag net een stap terug: waar kom die kwantumvakuum self vandaan? Wie of wat het die wette en eienskappe daargestel wat kwantumfluktuasies moontlik maak?

Soos die fisikus en agnostikus Paul Davies dit gestel het: “There is no free lunch. Someone has to pay the bill.” Die kwantumvakuum is nie “niks” nie. Dit is ‘n fisiese toestand wat self ‘n verduideliking benodig.

Beswaar 2: Hawking se Geen-Grens-Voorstel

Stephen Hawking het in sy beroemde boek A Brief History of Time (en later in The Grand Design) voorgestel dat die heelal geen grens in tyd het nie, dat tyd naby die “begin” van vorm verander en soos ‘n geslote oppervlak word, soos die Suidpool van die aarde. Net soos daar niks “suid van die Suidpool” is nie, is daar niks “voor die begin” nie. Nie omdat daar ‘n begin is nie, maar omdat die vraag nie meer sin maak nie.

Dit is ‘n vindingryke voorstel, maar dit het ernstige beperkings.

Eerstens is dit wiskundig spekulatief. Dit gebruik sogenaamde “denkbeeldige tyd” (imaginary time), ‘n wiskundige instrument wat nie noodwendig fisiese werklikheid verteenwoordig nie. Selfs Hawking het erken dat die vraag of denkbeeldige tyd werklik is, ‘n oop vraag bly.

Tweedens, selfs as die model korrek sou wees, elimineer dit nie die behoefte aan ‘n verduideliking nie. Die heelal in Hawking se model is steeds eindig in die verlede. Dit het steeds ‘n “begin” in die sin dat dit nie ewig in die verlede strek nie. Die vraag bly: hoekom bestaan hierdie geslote, eindige heelal? Hoekom is daar hierdie spesifieke kwantum-gravitasionele toestand eerder as niks?

Hawking het self hierdie vraag gestel, op ‘n merkwaardige wyse, in A Brief History of Time:

“What is it that breathes fire into the equations and makes a universe for them to describe?”

Dit is miskien die mees teologies suggestiewe vraag wat ‘n fisikus ooit gevra het. Selfs as jy die volledige wiskundige beskrywing van die heelal het, al die vergelykings, al die wette, bly die vraag: hoekom is daar enigiets om deur daardie vergelykings beskryf te word? Wiskunde alleen kan nie verduidelik waarom daar werklikheid is nie. Vergelykings bestaan op papier. Hulle skep nie heelalle nie.

Hawking se latere pogings om hierdie vraag te beantwoord was ironies genoeg nog minder bevredigend. In The Grand Design (2010) het hy beweer dat die heelal homself “uit niks” kon skep op grond van die wet van swaartekrag. Maar die wet van swaartekrag is nie “niks” nie. Dit is ‘n fisiese wet met spesifieke eienskappe. Om te sê dat die heelal uit die wet van swaartekrag ontstaan het, beantwoord nie die vraag waarom daar enigsins ‘n wet van swaartekrag is nie, of waarom dit hierdie spesifieke eienskappe het.

Die filosoof John Lennox het dit treffend opgesom: “Because there is a law of gravity, the universe can and will create itself from nothing. The laws of physics can produce something from nothing. But what produces the laws of physics?”

Die Verband met Reeks 1

Die verbande met Reeks 1 is merkwaardig.

In Reeks 1, Sessie 3, het ons die groot vraag gestel: “Hoekom is daar iets eerder as niks?” Ons het gekyk na die onderskeid tussen kontingente en noodsaaklike bestaan. Alles wat ons waarneem is kontingent: dit het sy bestaan aan iets anders te danke. Ons het die Beginsel van Voldoende Rede bespreek, die idee dat vir enigiets wat bestaan, daar ‘n rede moet wees waarom dit so is en nie anders nie.

En ons het tot die gevolgtrekking gekom dat daar ‘n noodsaaklike werklikheid moet wees, iets wat self nie afhanklik is van iets anders nie, maar wat die uiteindelike grond en draer is van alles wat bestaan. In die Christelike verstaan is dit God: die selfbestaande, ewige Skepper.

Daardie argument was suiwer filosofies. Dit het nie afgehang van enige wetenskaplike ontdekking nie. Selfs as die heelal ewig was, sou die kontingensie-argument steeds geld, want selfs ‘n ewige heelal is kontingent. Dit verklaar nie sy eie bestaan nie.

Maar nou sien ons dat die wetenskap onafhanklik tot ‘n bevinding gekom het wat hierdie filosofiese argument versterk en aanvul. Die heelal is nie ewig nie. Dit het ‘n begin gehad. Dit is nie selfbestaande nie. Dit is presies so kontingent soos die filosofie altyd vermoed het, en nou bevestig die kosmologie dit.

Die twee lyne van bewyse, die filosofiese en die wetenskaplike, konvergeer. Die kontingensie-argument sê: die heelal, of dit ewig is of nie, kan nie sy eie uiteindelike verduideliking wees nie. Die Kalām-argument voeg by: en trouens, die heelal is nie eens ewig nie. Dit het ‘n begin, wat die behoefte aan ‘n oorsaak nog meer akuut maak.

Saam wys hierdie argumente na presies wat die klassieke Christelike teïsme altyd geleer het: ‘n geskape, afhanklike wêreld wat sy bestaan te danke het aan ‘n noodsaaklike, selfbestaande God. Nie ‘n toevallige ooreenkoms nie. Dit is wat ons sou verwag as die Christelike wêreldbeskouing waar is.

Romeine 1:20 sê: “Want sy onsigbare dinge kan van die skepping van die wêreld af deur sy werke begryp en duidelik gesien word, naamlik sy ewige krag en goddelikheid.” Die apostel Paulus het nie van die Oerknal geweet nie, maar hy het geweet dat die skepping self na die Skepper wys. En nou, tweeduisend jaar later, bevestig die beste kosmologiese wetenskap presies dit.

Multiversum-Hipoteses

Wanneer die bewyse vir die begin van die heelal bespreek word, kom die multiversum-hipotese feitlik altyd ter sprake as ‘n poging om die implikasies te ontduik.

Wat is die Multiversum?

Die idee van ‘n multiversum stel voor dat ons heelal nie die enigste een is nie, dat daar miskien ontelbaar baie heelalle bestaan, elk met moontlik verskillende natuurwette en eienskappe. Daar is verskeie weergawes van hierdie idee:

Die “String Landscape”: In sekere weergawes van snaarteorie is daar ‘n enorme aantal moontlike konfigurasies van die basiese fisiese konstantes, miskien 10^500 of meer. Sommige fisici het voorgestel dat al hierdie konfigurasies werklik gerealiseer word in verskillende heelalle.

Ewige Inflasie: Volgens hierdie model is die inflasionêre uitdying wat ons heelal vroeë geskiedenis gekenmerk het, nie ‘n eenmalige gebeurtenis nie. Inflasie gaan voort in die meeste van die ruimte, en af en toe “breek” ‘n stukkie af en vorm ‘n nuwe heelal met sy eie eienskappe. Die proses gaan voort vir altyd in die toekoms, al het dit ‘n begin in die verlede (soos die BGV-stelling bevestig).

Die Baie-Wêrelde-Interpretasie: In die kwantummeganika stel hierdie interpretasie voor dat elke kwantum-meting die heelal in vertakkings “splits,” sodat elke moontlike uitkoms in ‘n afsonderlike werklikheid gerealiseer word.

Elimineer die Multiversum die Behoefte aan ‘n Verduideliking?

Nee.

Eerstens, selfs as ‘n multiversum bestaan, het dit self ‘n verduideliking nodig. As daar ‘n meganisme is wat heelalle genereer, of dit nou ewige inflasie of ‘n kwantumlandskap is, dan is die vraag onmiddellik: Waar kom hierdie meganisme vandaan? Wie of wat het die wette en voorwaardes daargestel wat die generering van heelalle moontlik maak?

Die multiversum skuif die vraag net een vlak terug. In plaas van te vra “Waarom bestaan hierdie heelal?” vra ons nou “Waarom bestaan hierdie multiversum?” Die fundamentele vraag, “Waarom is daar iets eerder as niks?”, bly onbeantwoord. ‘n Multiversum is net so kontingent as ‘n enkele heelal. Dit verklaar nie sy eie bestaan nie.

Tweedens, soos ons gesien het, het die BGV-stelling getoon dat selfs ‘n multiversum wat gemiddeld uitdy, ‘n begin moet hê. Die multiversum ontsnap nie die begin nie.

Derdens, die multiversum is nie empiries toetsbaar nie. Ons kan nie ander heelalle waarneem nie. Ons kan nie eksperimente ontwerp om die bestaan van ‘n multiversum te bevestig of te weerlê nie. Dit is, in die strengste sin van die woord, ‘n teoretiese konstruksie, ‘n spekulasie, hoe wiskundig gesofistikeerd ook al.

Hier lê ‘n diep ironie. Dieselfde mense wat dikwels “wetenskaplike bewyse” eis vir die bestaan van God, aanvaar geredelik ‘n multiversum waarvoor daar geen direkte empiriese bewyse is nie. Die multiversum word nie geglo omdat dit waargeneem is nie, maar omdat dit ‘n manier bied om die fyninstelling van die heelal te verklaar sonder om ‘n Skepper te veronderstel. Dit is, in werklikheid, ‘n metafisiese verbintenis wat as wetenskap aangebied word.

Ons sê nie dat die multiversum onmoontlik is nie. Dit is dalk waar. Maar selfs as dit waar is, verander dit niks aan die fundamentele vraag nie. Die multiversum, net soos ‘n enkele heelal, is kontingent. Dit het ‘n begin. Dit verklaar nie sy eie bestaan nie. Die behoefte aan ‘n noodsaaklike, selfbestaande grond van alle werklikheid bly onveranderd.

Roger Penrose se Kritiek

Die briljante wiskundige fisikus Sir Roger Penrose, ‘n Nobelpryslaureaat en een van die mees gerespekteerde denkers in die teoretiese fisika, het skerp kritiek uitgespreek teen die gebruik van die multiversum as verduideliking.

Penrose het daarop gewys dat die multiversum nie werklik iets verduidelik nie. Dit is ‘n manier om die behoefte aan verduideliking te vermy. As jy sê dat alles wat moontlik is iewers gerealiseer word, verduidelik jy niks, want jy het niks uitgesluit nie. ‘n “Teorie” wat alles verduidelik, verduidelik in werklikheid niks.

Penrose het ook berekeninge gedoen wat aantoon dat die spesifieke toestand van ons heelal se begin so onwaarskynlik is dat selfs ‘n multiversum nie help nie. Die kans dat ons spesifieke heelal per toeval uit ‘n multiversum sou ontstaan met die lae entropie (orde) wat dit het, is so klein (Penrose bereken dit as 1 in 10^(10^123)) dat dit nie rasioneel is om dit aan toeval toe te skryf nie, selfs binne ‘n multiversum van onvoorstelbare grootte.

Penrose is nie ‘n teïs nie. Hy het nie hierdie berekeninge gedoen om God se bestaan te bewys nie. Maar sy werk wys dat die multiversum nie die maklike ontsnapping is wat sommige hoop nie. Die presiese begin van ons heelal vra na ‘n verduideliking wat dieper gaan as “toeval oor baie heelalle.”

Wat die Fisika Nie Kan Beantwoord Nie

Daar is ‘n wydverspreide aanname dat die wetenskap, veral die fisika, in beginsel alle vrae kan beantwoord. As ons net genoeg navorsing doen, genoeg eksperimente uitvoer, genoeg data versamel, sal ons uiteindelik alles weet. Hierdie siening word soms scientisme genoem: die geloof dat die wetenskap die enigste betroubare bron van kennis is.

Maar die fisika het inherente beperkings. Dit is nie beperkings van tegnologie of kennis wat ooit oorbrug sal word nie. Dit is beperkings van die aard van wat fisika is en wat dit kan doen.

Die fisika kan die hoe van die heelal beskryf. Dit kan ons vertel wat gebeur het vanaf die eerste Planck-tyd (10⁻⁴³ sekondes) na die Oerknal. Dit kan die uitdying van die heelal modelleer, die vorming van atome beskryf, die ontstaan van sterrestelsels verklaar.

Maar die fisika kan nie die waarom beantwoord nie.

Hoekom is daar ‘n heelal wat deur hierdie wette geregeer word? Hoekom is daar enigsins wette? Hoekom het hierdie wette spesifiek die eienskappe wat hulle het? Hoekom is daar iets om deur fisika beskryf te word?

Hierdie vrae val buite die bestek van die fisika. Nie omdat fisici nie hard genoeg probeer nie, maar omdat fisika van aard die patrone en reëlmatighede van ‘n reeds bestaande werklikheid bestudeer. Dit kan nie verduidelik waarom daar enigiets is om te bestudeer nie.

Dis soos om te vra waarom daar musiek bestaan deur die klankgolwe te analiseer. Jy kan presies beskryf hoe die golwe voortgeplant word, watter frekwensies betrokke is, hoe die oor dit waarneem. Maar jy het nog steeds nie verduidelik waarom daar musiek is nie, waarom daar ‘n heelal is waarin klank en ore en bewussyn en skoonheid bestaan.

Hawking het hierdie beperking raakgesien. In A Brief History of Time het hy gevra:

“What is it that breathes fire into the equations and makes a universe for them to describe? Why does the universe go to all the bother of existing?”

‘n Pragtige formulering. Die vergelykings van fisika beskryf die struktuur van die heelal. Maar vergelykings op sigself is net patrone, reëls, abstraksies. Hulle het geen mag om iets tot stand te bring nie. ‘n Wiskundige vergelyking kan ‘n kring beskryf, maar dit kan nie ‘n kring skep nie. So ook kan die wette van fisika die heelal beskryf, maar hulle kan nie verduidelik waarom daar ‘n heelal is om te beskryf nie.

Hawking het later, soos ons genoem het, probeer om hierdie vraag te beantwoord deur te sê dat die wet van swaartekrag die heelal kon “skep.” Maar dit is ‘n sirkelredenering: jy veronderstel reeds die bestaan van ‘n fisiese wet (swaartekrag) om die bestaan van die fisiese werklikheid te verklaar. Die vraag is juis: waarom is daar enigsins fisiese wette?

Die eerlike erkenning is dat die fisika nie die diepste metafisiese vraag kan beantwoord nie. Dit kan die struktuur van die werklikheid beskryf, maar nie die bestaan van die werklikheid verklaar nie. Vir dié antwoord moet ons na die metafisika kyk, na die filosofie, na die teologie. En soos ons gesien het, wys die beste filosofiese redenasie na ‘n noodsaaklike, selfbestaande, persoonlike God as die uiteindelike grond van alle werklikheid.

Dit is nie ‘n erkenning van onkunde nie. Dit is ‘n erkenning van verskillende vlakke van verduideliking. Die fisikus kan vra hoe die heelal werk. Die filosoof kan vra waarom dit bestaan. Die teoloog kan vra wie dit geskep het en wat die doel daarvan is. Hierdie vrae is nie in kompetisie met mekaar nie. Hulle vul mekaar aan, soos verskillende vensters wat op dieselfde werklikheid uitkyk.

John Lennox, die Oxford-wiskundige en Christelike denker, gebruik die analogie van ‘n motor. Jy kan ‘n motor op twee vlakke verduidelik. Op die een vlak praat jy oor verbrandingsmotore, brandstof, suiers en vonkproppe: die “hoe” van hoe die motor werk. Op die ander vlak praat jy oor Henry Ford, wat die motor ontwerp het, en waarom hy dit gemaak het: die “wie” en die “waarom.” Hierdie twee verduidelikings weerspreek mekaar nie. Albei is waar. Albei is nodig vir ‘n volledige verstaan.

So ook met die heelal. Die fisika kan ons vertel hoe die heelal werk. Maar vir die vraag waarom dit bestaan, wat dit is wat “vuur in die vergelykings blaas”, het ons ‘n antwoord nodig wat bo die fisika uitreik. Daardie antwoord, sê die Christelike tradisie, is die lewende God wat uit vrye wil geskep het.

Die Bybelse Perspektief

Wat sê die Skrif?

Genesis 1:1 — “In die begin het God die hemel en die aarde geskep.”

Miskien die mees bekende sin in die hele Bybel, en een van die mees merkwaardige stellings in die hele antieke literatuur. In ‘n wêreld waar die meeste volke geglo het dat die heelal ewig is, of dat dit gevorm is uit reeds bestaande materie deur ‘n beperkte god of gode, verklaar Genesis dat God die hemel en die aarde geskep het. Die Hebreeuse woord bara dui op ‘n skeppende handeling wat slegs aan God toegeskryf word. Nie die herrangskikking van bestaande materiaal nie. Die daarstelling van iets nuuts.

“In die begin”: daar was ‘n begin. Nie ‘n ewige siklus nie. Nie ‘n oneindige verlede nie. ‘n Begin. Tyd, ruimte en materie het ‘n aanvangspunt gehad, en daardie aanvangspunt was God se skeppende daad.

Dit was ‘n radikale stelling in die antieke wêreld. Die Grieke, die Egiptenare, die Babiloniërs: die meeste het aangeneem dat die basiese stof van die werklikheid ewig was. Genesis staan feitlik alleen in die antieke wêreld met die stelling dat alles, selfs die basiese stof van die werklikheid, ‘n begin gehad het in God se vrye skeppingsbesluit.

En dit is presies wat die moderne kosmologie in die twintigste eeu bevestig het. Die heelal het ‘n begin. Dit is nie ewig nie. Dit is nie selfverklarend nie. Dit is geskep.

Hebreërs 11:3 — “Deur die geloof verstaan ons dat die wêreld deur die woord van God toeberei is, sodat die dinge wat gesien word, nie ontstaan het uit sienlike dinge nie.”

Hierdie vers is merkwaardig. Dit leer dat die sigbare werklikheid nie uit reeds bestaande sigbare dinge voortgekom het nie. Dit is ‘n vroeë, Bybelse uitdrukking van wat die teologie creatio ex nihilo noem: skepping uit niks. God het nie die heelal gebou uit materiaal wat reeds beskikbaar was nie. Hy het dit tot stand geroep deur sy Woord.

Psalm 33:6, 9 — “Deur die Woord van die Here is die hemele gemaak en deur die Gees van sy mond hulle hele leër. … Want Hý het gespreek, en dit was; Hý het gebied, en dit staan.”

Hier sien ons die absolute soewereiniteit van God se skeppende daad. Hy het gespreek, en dit was. Geen stryd, geen moeite, geen beperking. Die hele heelal het tot stand gekom deur die blote woord van God. “Hy het gebied, en dit staan.”

Hierdie verse skets ‘n beeld van ‘n God wat nie moeite doen om te skep nie, maar wat met absolute vryheid en mag besluit dat daar iets sal wees. Die afstand tussen “niks” en “alles” word oorbrug deur ‘n enkele woord van die Almagtige.

Jesaja 40:26 — “Slaan julle oë op na bo en kyk! Wie het hierdie dinge geskape? Hy wat hulle leër uitlei volgens getal, hulle almal by die naam roep; vanweë die grootheid van Sy krag en omdat Hy sterk van mag is, ontbreek daar nie een nie.”

Die profeet nooi ons om op te kyk, na die sterre, na die hemelruim, en te vra: Wie het dit geskep? Nie “wat” nie, maar “Wie.” Die vraag na die oorsprong van die heelal is nie ‘n onpersoonlike, meganiese vraag nie. Dit lei na ‘n Persoon.

Nie ‘n “God van die Gapings” Nie

Die Bybelse verstaan van God as Skepper is nie ‘n “God van die gapings”-argument nie. ‘n “God van die gapings”-argument sê: “Ons weet nie hoe hierdie verskynsel werk nie, dus God het dit gedoen.” Dit is ‘n argument uit onkunde, en dit word swakker soos die wetenskap vorder.

Dis nie wat ons hier doen nie. Die argument uit die begin van die heelal is ‘n argument uit die beste beskikbare wetenskaplike kennis, saamgelees met diep filosofiese redenasie. Ons sê nie: “Ons verstaan nie die Oerknal nie, dus God.” Ons sê: “Ons verstaan die Oerknal baie goed, en die implikasies daarvan, dat die heelal ‘n begin het, dat tyd en ruimte tot stand gekom het, dat die oorsaak buite die fisiese werklikheid moet lê, wys na ‘n transendente, persoonlike Skepper.”

Dit is ook nie toevallig dat die Bybel en die kosmologie saamval nie. Die Bybel het millennia lank geleer dat die heelal ‘n begin het, in ‘n tyd toe hierdie stelling teenstroomig was. Die wetenskap het eers in die twintigste eeu ingehaal.

Die teoloog Robert Jastrow, ‘n agnostikus en die eerste direkteur van NASA se Goddard Institute for Space Studies, het dit so gestel:

“For the scientist who has lived by his faith in the power of reason, the story ends like a bad dream. He has scaled the mountains of ignorance; he is about to conquer the highest peak; as he pulls himself over the final rock, he is greeted by a band of theologians who have been sitting there for centuries.”

Die teoloë was eerste by die top. Die wetenskap het later gekom en bevestig wat die Skrif altyd geleer het.

Verwondering en Aanbidding

Wanneer ons hierdie dinge bedink, die ontplooiing van die heelal uit ‘n begin, die presiese fisiese wette, die feit dat ons in ‘n heelal leef wat deur ‘n enkele woord van die Almagtige tot stand gekom het, behoort dit ons tot verwondering en aanbidding te bring.

Ons praat nie hier oor abstrakte teorie nie. Ons praat oor die werklikheid waaraan ons elke dag deel het. Elke ster wat jy saans sien, elke asemteug wat jy neem, elke oomblik van bewussyn: dit alles bestaan omdat God gespreek het. Die nagalm van daardie skepping vul steeds die heelal, letterlik, in die vorm van die kosmiese mikrogolf-agtergrondstraling. Ons leef in die reverbering van God se skeppende Woord.

Psalm 19:2-4 sê: “Die hemele vertel die eer van God, en die uitspansel verkondig die werk van sy hande. Die een dag stort ‘n boodskap uit aan die ander, en die een nag deel kennis mee aan die ander. Daar is geen spraak of woorde nie; hulle stem word nie gehoor nie.”

Die heelal praat. Nie met woorde nie, maar met sy blote bestaan. Dit getuig van sy Skepper. Dat daar iets is eerder as niks, dat hierdie iets ‘n begin het, dat hierdie begin ‘n Beginmaker veronderstel: dit is ‘n stille maar oorverdowende getuienis.

En die korrekte reaksie op hierdie getuienis is nie bloot intellektuele instemming nie. Dit is aanbidding. Die erkenning dat ons klein is, dat die heelal groot is, en dat die God wat dit geskep het, oneindig groter is as alles wat ons kan bedink.

Openbaring 4:11 sê: “U is waardig, o Here, om te ontvang die heerlikheid en die eer en die krag, want U het alles geskape en deur U wil bestaan hulle en is hulle geskape.”

Deur U wil bestaan hulle. Nie deur toeval nie. Nie deur blinde prosesse sonder rede nie. Deur God se wil. Die heelal bestaan omdat God gewil het dat dit bestaan. En elke oomblik dat dit voortgaan om te bestaan, is dit omdat God dit voortdurend in stand hou deur die woord van sy krag (Hebreërs 1:3).

Brug na die Volgende Sessie

Die heelal het ‘n begin. Die wetenskap bevestig dit. Die filosofie verduidelik die implikasies. Die Skrif het dit altyd geleer. Die heelal is nie ewig, nie selfbestaande, nie selfverklarend nie. Dit is geskep. Dit is kontingent. Dit het ‘n oorsaak: ‘n tydlose, ruimtelose, immateriële, kragtige, persoonlike Skepper.

Maar die verhaal gaan verder. Die heelal het nie net ‘n begin nie. Dit het ‘n baie spesifieke begin. Die fisiese konstantes en aanvanklike voorwaardes van die heelal is met merkwaardige presisie “ingestel”, so presies dat selfs die kleinste verandering lewe, of selfs materie, onmoontlik sou maak.

Hoe presies? En wat beteken dit?

Dit is die onderwerp van die volgende sessie: die fyninstelling van die heelal. Die heelal het nie net begin nie. Dit het begin met ‘n onvoorstelbare presisie wat na ‘n rasionele Grond wys, ‘n Logos wat orde en doel in die skepping gelê het.

Noemenswaardige Aanhalings

“All the evidence we have says that the universe had a beginning.” – Alexander Vilenkin, Many Worlds in One

• (Al die getuienis wat ons het, sê dat die heelal ‘n begin gehad het.)

“What is it that breathes fire into the equations and makes a universe for them to describe? Why does the universe go to all the bother of existing?” – Stephen Hawking, A Brief History of Time

• (Wat is dit wat vuur in die vergelykings blaas en ‘n heelal maak vir hulle om te beskryf? Waarom doen die heelal al die moeite om te bestaan?)

“The best data we have are exactly what I would have predicted had I nothing to go on but the first five books of Moses, the Psalms, and the Bible as a whole.” – Arno Penzias (Nobelpryslaureaat, mede-ontdekker van die kosmiese mikrogolf-agtergrondstraling)

• (Die beste data wat ons het, is presies wat ek sou voorspel het as ek niks gehad het om op te werk behalwe die eerste vyf boeke van Moses, die Psalms en die Bybel as geheel nie.)

“For the scientist who has lived by his faith in the power of reason, the story ends like a bad dream. He has scaled the mountains of ignorance; he is about to conquer the highest peak; as he pulls himself over the final rock, he is greeted by a band of theologians who have been sitting there for centuries.” – Robert Jastrow, God and the Astronomers

• (Vir die wetenskaplike wat geleef het by sy geloof in die krag van die rede, eindig die verhaal soos ‘n nagmerrie. Hy het die berge van onkunde geklim; hy is op die punt om die hoogste piek te verower; soos hy homself oor die laaste rots trek, word hy begroet deur ‘n groep teoloë wat al eeue lank daar sit.)

“Almost everyone now believes that the universe, and time itself, had a beginning at the Big Bang.” – Stephen Hawking, The Nature of Space and Time

• (Feitlik almal glo nou dat die heelal, en tyd self, ‘n begin gehad het met die Oerknal.)

“In the beginning God created the heavens and the earth.” – Genesis 1:1

Bybelkommentaar oor Sleutelteksgedeeltes

Genesis 1:1 – “In die begin het God die hemel en die aarde geskep.” (1953-vertaling)

Hierdie openingswoorde van die Bybel is tegelyk eenvoudig en onpeilbaar diep. “In die begin” vestig onmiddellik die idee dat daar ‘n begin was; die tyd is nie ewig nie. “God” word sonder vooraf verduideliking genoem. Hy word as die voor-die-hand-liggende werklikheid aangebied, die Een wat voor alle ander dinge is. “Het geskep” (bara) is ‘n werkwoord wat in die Ou Testament uitsluitlik vir God se skeppende handeling gebruik word, ‘n daad wat alleen God kan verrig. “Die hemel en die aarde” is ‘n merisme, ‘n uitdrukking wat die totaliteit aandui. God het alles geskep: alles wat daar is.

Herman Bavinck merk op dat Genesis 1:1 die fondament is van die hele Bybelse wêreldbeskouing: God is absoluut soewerein, die wêreld is volkome afhanklik van Hom, en daar is ‘n radikale onderskeid tussen die Skepper en die skepping. Hierdie Skepper-skepsel-onderskeid is een van die mees fundamentele beginsels in die Christelike teologie.

Hebreërs 11:3 – “Deur die geloof verstaan ons dat die wêreld deur die woord van God toeberei is, sodat die dinge wat gesien word, nie ontstaan het uit sienlike dinge nie.” (1953-vertaling)

Hierdie vers leer creatio ex nihilo, skepping uit niks. Die sigbare werklikheid is nie gevorm uit reeds bestaande sigbare materiaal nie. Dit is tot stand geroep deur God se Woord. Die skrywer sê dat ons dit “deur die geloof verstaan”. Nie ‘n waarheid wat deur empiriese waarneming alleen bereik kan word nie, maar ook nie irrasioneel nie. ‘n Geloofsinsig wat deur die rede bevestig word.

Psalm 33:6, 9 – “Deur die Woord van die Here is die hemele gemaak en deur die Gees van sy mond hulle hele leër. … Want Hý het gespreek, en dit was; Hý het gebied, en dit staan.” (1953-vertaling)

Die psalmis beskryf die skepping as ‘n daad van God se Woord. Die klem lê op die soewereiniteit en vryheid van God se skeppende spreke. Geen moeite, geen teëstand, geen beperking. God spreek, en die werklikheid gehoorsaam. Calvyn kommentaar dat hierdie verse ons leer dat God nie nodig gehad het om hulpmiddels of materiaal te gebruik nie. Sy blote Woord was genoeg om die hele skepping tot stand te bring.

Jesaja 40:26 – “Slaan julle oë op na bo en kyk! Wie het hierdie dinge geskape? Hy wat hulle leër uitlei volgens getal, hulle almal by die naam roep; vanweë die grootheid van Sy krag en omdat Hy sterk van mag is, ontbreek daar nie een nie.” (1953-vertaling)

In die konteks van Jesaja 40 word die volk in ballingskap getroos met die herinnering aan God se onbeperkte mag. Die uitnodiging om “op te kyk” na die sterre is ‘n uitnodiging om die Skepper te onthou. Die feit dat God elke ster “by die naam roep” dui op intieme kennis en soewereine beheer. Dieselfde God wat biljoene sterrestelsels tot stand geroep het, ken jou by die naam.

Romeine 1:20 – “Want sy onsigbare dinge kan van die skepping van die wêreld af deur sy werke begryp en duidelik gesien word, naamlik sy ewige krag en goddelikheid, sodat hulle geen verontskuldiging het nie.” (1953-vertaling)

Paulus leer hier dat die skepping self getuig van God se bestaan. Sy “ewige krag” en “goddelikheid” is sigbaar in wat Hy gemaak het. Nie ‘n argument uit onkunde nie, maar uit wat ons kan sien en begryp wanneer ons die skepping eerlik beskou. Dat die heelal ‘n begin het, dat dit georden is, dat dit verstaanbaar is: dit alles wys na die Skepper.

Besprekingsvrae

• In Reeks 1 het ons gekyk na die kontingensie-argument, die idee dat die heelal nie sy eie bestaan kan verklaar nie. Hoe versterk die wetenskaplike ontdekking van die Oerknal hierdie filosofiese argument? Verander dit jou oortuiging, of bevestig dit wat jy reeds geglo het?

• Einstein het sy eie wiskundige resultate gewantrou omdat die implikasies (‘n begin van die heelal) hom ongemaklik gemaak het. Kan jy aan ander voorbeelde dink waar mense wetenskaplike of filosofiese bevindings verwerp het omdat die gevolge onwelkom was? Wat leer dit ons oor die verhouding tussen bewyse en wêreldbeskouings?

• Hawking het gevra: “Wat is dit wat vuur in die vergelykings blaas en ‘n heelal maak vir hulle om te beskryf?” Hoe sou jy hierdie vraag beantwoord? Kan die fisika alleen dit beantwoord, of het ons ‘n ander soort verduideliking nodig?

• Die Kalām kosmologiese argument kom tot die gevolgtrekking dat die oorsaak van die heelal tydloos, ruimteloos, immaterieel, kragtig en persoonlik moet wees. Hoe vergelyk hierdie beskrywing met die Bybelse beeld van God? Is daar verskille of spanningspunte?

• Sommige mense beroep hulle op die multiversum om die behoefte aan ‘n Skepper te vermy. Hoekom elimineer die multiversum nie die fundamentele vraag nie? Wat dink jy motiveer die gewildheid van hierdie idee: wetenskaplike bewyse, of ‘n filosofiese voorkeur?

• Genesis 1:1 was eeue lank teenstroomig; die meeste antieke volke het geglo dat die heelal ewig is. Die wetenskap het eers in die twintigste eeu die Bybel se standpunt bevestig. Hoe beïnvloed hierdie feit jou vertroue in die Skrif?

• Die Bybel leer dat God nie net eenmaal geskep het nie, maar voortdurend alles in stand hou (Hebreërs 1:3, Kolossense 1:17). Hoe verander dit jou verstaan van die Oerknal? Is dit bloot iets wat lank gelede gebeur het, of het dit voortdurende betekenis?

• Robert Jastrow het gesê dat die wetenskaplike wat die berg van onkunde klim, aan die top begroet word deur teoloë wat al eeue lank daar sit. Hoe reageer jy op hierdie beeld? Is dit vir jou bemoedigend, of bring dit ander gevoelens na vore?

Aanbevole Leeswerk

• William Lane Craig — Reasonable Faith (Hoofstuk 3–4) ‘n Deeglike en toeganklike uiteensetting van die Kalām kosmologiese argument, met volledige bespreking van die wetenskaplike en filosofiese bewyse vir die begin van die heelal.

• John Lennox — God’s Undertaker: Has Science Buried God? ‘n Oxford-wiskundige se helder en gebalanseerde behandeling van die verhouding tussen wetenskap en geloof, met besondere aandag aan kosmologie en die grense van die fisika.

• Robert Jastrow — God and the Astronomers ‘n Kort, leesbare boek deur die agnostiese NASA-wetenskaplike wat die geskiedenis van die kosmologiese ontdekkings vertel en die teologiese implikasies eerlik erken.

• Stephen Hawking — A Brief History of Time Hawking se klassieke werk oor kosmologie, merkwaardig vir sy eerlike filosofiese vrae, al is sy antwoorde nie altyd bevredigend nie. Belangrik om te lees as primêre bron.

• David Bentley Hart — The Experience of God: Being, Consciousness, Bliss Soos in Reeks 1 bespreek, bied Hart die diepste filosofiese raamwerk vir die verstaan van God as die grond van bestaan, die metafisiese agtergrond wat die kosmologiese argument sy volle gewig gee.

• Alexander Vilenkin — Many Worlds in One: The Search for Other Universes Die kosmolooog wat mede-outeur van die BGV-stelling is, skryf oor die begin van die heelal en die multiversum vanuit ‘n wetenskaplike perspektief.

Bibliografie

• Borde, Arvind, Alan H. Guth, en Alexander Vilenkin. “Inflationary spacetimes are incomplete in past directions.” Physical Review Letters 90, nr. 15 (2003): 151301. – Die oorspronklike publikasie van die BGV-stelling wat bewys dat enige gemiddeld-uitdyende heelal ‘n begin moet hê.

• Craig, William Lane. Reasonable Faith: Christian Truth and Apologetics. 3de uitg. Crossway, 2008. – ‘n Omvattende behandeling van die Kalām kosmologiese argument, insluitend filosofiese en wetenskaplike bewyse.

• Hawking, Stephen. A Brief History of Time. Bantam Books, 1988. – Hawking se bekende populêre uiteensetting van kosmologie, met die beroemde vraag oor wat “vuur in die vergelykings blaas.”

• Hawking, Stephen, en Leonard Mlodinow. The Grand Design. Bantam Books, 2010. – Hawking se latere poging om te argumenteer dat die heelal homself uit niks kon skep, ‘n standpunt wat wyd gekritiseer is.

• Hart, David Bentley. The Experience of God: Being, Consciousness, Bliss. Yale University Press, 2013. – Die metafisiese raamwerk vir die verstaan van God as die grond van bestaan, wat die kosmologiese argument sy diepste filosofiese konteks gee.

• Jastrow, Robert. God and the Astronomers. W.W. Norton, 1978. – ‘n Agnostiese astronoom se verslag van die kosmologiese ontdekkings en hul teologiese implikasies.

• Lennox, John C. God’s Undertaker: Has Science Buried God? Lion Hudson, 2009. – ‘n Gebalanseerde behandeling van die verhouding tussen wetenskap en geloof deur ‘n Oxford-wiskundige.

• Lemaître, Georges. “Un univers homogène de masse constante et de rayon croissant rendant compte de la vitesse radiale des nébuleuses extra-galactiques.” Annales de la Société Scientifique de Bruxelles 47 (1927): 49–59. – Lemaître se oorspronklike artikel wat die uitdyende heelal voorstel.

• Penrose, Roger. The Road to Reality: A Complete Guide to the Laws of the Universe. Jonathan Cape, 2004. – Penrose se omvattende behandeling van die fisika, met belangrike kritiek op die multiversum en berekeninge oor die onwaarskynlikheid van ons heelal se begintoestande.

• Vilenkin, Alexander. Many Worlds in One: The Search for Other Universes. Hill and Wang, 2006. – Die kosmolooog se eie verslag van die BGV-stelling en die implikasies daarvan vir die begin van die heelal.

• Bavinck, Herman. Gereformeerde Dogmatiek, Deel 2. – ‘n Reformatoriese teologiese verwerking van God as Skepper en die leer van creatio ex nihilo.

• Calvyn, Johannes. Institusie van die Christelike Godsdiens, Boek 1. – Calvyn se behandeling van God as Skepper en die sensus divinitatis wat in elke mens teenwoordig is.

The Universe Had a Beginning

Introduction

For most of Western intellectual history, many thinkers assumed that the universe was eternal. Aristotle taught that the cosmos always was and always would be. Even many modern scientists believed deep into the twentieth century that the universe was static and unchanging — an eternal backdrop within which stars and planets go about their business. The idea of a beginning was uncomfortable for many, because it immediately opened a question that science could not easily answer: What caused the universe to begin?

And yet the twentieth century changed everything. Through a series of discoveries — mathematical, observational, and experimental — science reached a conclusion that overturned centuries of philosophical assumptions: the universe is not eternal. It had a beginning. There was a boundary at which time, space, matter, and energy came into being.

This discovery is one of the most theologically significant scientific findings in history. If the universe had a beginning, it is not self-existent. Not the ultimate reality. In the language of Series 1: contingent — dependent on something else for its existence.

In Series 1, Session 3, we posed the great question: “Why is there something rather than nothing?” Everything we observe is contingent. The Principle of Sufficient Reason drives us to search for an ultimate explanation, and that explanation must lie in a necessary reality: God as the ground of being. That argument was purely philosophical. It did not depend on scientific discoveries.

But now we see something remarkable: science has independently arrived at a finding that fits precisely with what philosophy and Scripture have always taught. The universe is not self-explanatory. It had a beginning. It is created.

A word of clarity before we proceed. We are not reasoning from neutral ground towards God, as if the evidence must first convince us of what we do not yet know. Scripture is clear: “The heavens declare the glory of God” (Ps. 19:1), and what can be known about God is plain to all people, “because God has shown it to them” (Rom. 1:19–20, ESV). In Series 1 we already learned who God is: the necessary, eternal Creator. What we now discover in cosmology is not a new argument that must prove that truth. It is the confirmation of what Genesis 1:1 has always proclaimed: “In the beginning, God created the heavens and the earth.” Science clears intellectual stumbling blocks from the path, and for that we are grateful. But it is the Holy Spirit who opens hearts, not our arguments.

The Discovery of the Big Bang

Einstein’s General Theory of Relativity (1915)

The story begins with mathematics. In 1915, Albert Einstein published his General Theory of Relativity — one of the greatest intellectual achievements in human history. This theory changed our understanding of gravity. Gravity is no longer a force acting over a distance; it is the curvature of space-time itself by mass and energy.

But Einstein’s own equations revealed something that deeply unsettled him. The equations showed that the universe is dynamic. It cannot remain static. It must either expand or contract. A static, eternal universe is mathematically unstable within the framework of General Relativity.

Einstein would not accept it. He was so convinced that the universe must be eternal and unchanging that he inserted an extra term into his equations: the so-called cosmological constant (lambda, Lambda), specifically to keep the universe static. This term served as a counterweight against gravity, so that the universe would neither collapse nor expand.

Years later, when the evidence for an expanding universe became overwhelming, Einstein called this addition his “greatest blunder.” He had distrusted his own mathematics because the consequences looked too radical. The universe his equations described was not the eternal, quiet cosmos he had expected. It was a universe in motion — a universe with a history, and therefore, by implication, a beginning.

The mathematics had shown the truth, but the scientist first tried to escape it. Why? Because a beginning raises uncomfortable questions. If the universe was not always there, where does it come from? That is a question beyond physics. A metaphysical question. And for many, it was a question that came too close to theology.

Friedmann and Lemaitre: The Universe Expands

It was not Einstein himself who fully thought through the implications of his theory. It was two other scientists, almost simultaneously, who took the step of saying: the equations mean what they say. The universe is expanding.

Alexander Friedmann, a Russian mathematician and cosmologist, published solutions to Einstein’s field equations in 1922 showing that the universe could expand or contract. Friedmann’s models were mathematically correct, but Einstein initially regarded them as an error. (He later had to acknowledge that Friedmann was right.)

But the most remarkable figure in this story is Georges Lemaitre, a Belgian Catholic priest who was also a brilliant physicist. In 1927, Lemaitre, independently of Friedmann, reached the same conclusion: the universe is expanding. But he went further. If the universe is expanding, it was smaller in the past. Play the history backwards like a film you are rewinding, and everything comes closer and closer together, until you reach a point where all matter and energy was compressed into an unimaginably dense, small starting point.

Lemaitre called this the “primeval atom”: a cosmological explosion from this primordial state. A beginning of everything.

Here is a man who was both priest and physicist, who followed the mathematics to its logical conclusion, and who proclaimed that the universe had a beginning. He did not start from the Bible and try to fit the science in. He started from the physics and discovered that science points in the same direction as Genesis 1:1.

When Lemaitre presented his idea to Einstein, Einstein’s reaction was telling. He said: “Vos calculs sont corrects, mais votre physique est abominable” — “Your calculations are correct, but your physics is abominable.” Einstein acknowledged the mathematics but rejected the consequences. The idea of a beginning was too uncomfortable for him.

This resistance to the idea of a beginning was not unique to Einstein. It was a broad sentiment in the scientific community. A beginning has theistic implications. If the universe is not eternal — if it has a cause — we stand before a question that the naturalistic worldview cannot easily answer.

Edwin Hubble’s Observations (1929)

While Friedmann and Lemaitre worked out the theory, the empirical confirmation came from an unexpected quarter. Edwin Hubble, the American astronomer, discovered something in 1929 with the great telescope on Mount Wilson that would change cosmology forever.

Hubble studied the light of distant galaxies and noticed that the light was consistently shifted towards the red end of the spectrum — a phenomenon known as redshift. When a light source moves away from you, the wavelength of its light is stretched and it shifts towards the red end of the spectrum. (The same principle as when an ambulance siren sounds lower as it drives away from you: the Doppler effect.)

Hubble discovered that virtually all galaxies are moving away from us, and the farther away they are, the faster they are moving away. The universe is expanding. Not that the galaxies are flying through space like shrapnel after an explosion, but that space itself is stretching — like dots on a balloon that is being blown up. Every dot (galaxy) moves away from every other dot, not because they themselves are moving, but because the balloon (space) is stretching.

This observation confirmed Lemaitre’s theory. The universe is expanding. Reverse the process, and the universe was earlier smaller, denser, hotter. Go far enough back, and you reach a point where everything began.

The universe has a history. It is not eternal and unchanging. It had a beginning.

The Cosmic Microwave Background Radiation (1965)

The most dramatic confirmation of the Big Bang came in 1965. Almost by accident.

Arno Penzias and Robert Wilson, two radio astronomers at Bell Laboratories in New Jersey, were calibrating a sensitive antenna for satellite communication. They picked up a persistent, low-level noise that they could not explain. It came from every direction. Not from a specific star or galaxy, but from the sky itself — evenly distributed in all directions.

They first thought it was a technical fault. They even chased pigeons off the antenna, wondering if the noise came from pigeon droppings. But the signal remained. It was everywhere. Always the same. And it matched precisely the type of radiation that theoretical physicists had predicted as the remnant of the Big Bang.

What they had discovered was the cosmic microwave background radiation (CMB) — the “afterglow” of creation. When the universe was still young and tremendously hot, all matter and energy was in a dense, glowing plasma. As the universe expanded and cooled, this radiation was “released” and began to fill the universe. Over billions of years it cooled to microwaves. That is precisely what Penzias and Wilson picked up.

This discovery was a turning point. No longer a theory or a mathematical model. There was a physical, measurable remnant of the beginning of the universe. We can, literally, hear the afterglow of creation.

The static you would see as “snow” on your television (in the old days of analogue television) is partly derived from this cosmic background radiation. A fraction of that noise is the last whisper of the moment when the universe came into being. We live in the afterglow of creation.

Penzias and Wilson received the Nobel Prize for Physics in 1978 for this discovery. Penzias later said: “The best data we have are exactly what I would have predicted had I nothing to go on but the first five books of Moses, the Psalms, and the Bible as a whole.”

The Irony of Fred Hoyle

There is a particular irony in the history of cosmology.

The term “Big Bang” was not coined by a proponent of the theory. It was minted by Fred Hoyle, a British astronomer and committed atheist, during a BBC radio programme in 1949. Hoyle used the term as a nickname of derision. He found the idea of a beginning laughable and contemptuously called it a “big bang.”

Why was Hoyle so opposed to the Big Bang theory? Because he recognised its theistic implications. If the universe has a beginning, it is easier to argue that it has a Creator. Hoyle acknowledged this openly. He preferred to defend the Steady State model, which taught that the universe is eternal and that new matter continually arises spontaneously to keep the density constant as the universe expands.

Hoyle’s model was not foolish. It was a serious scientific proposal. But it had a clear ideological motivation: to avoid the implication of a beginning. Hoyle even acknowledged that the Big Bang theory reminded him of the biblical creation account, and that this troubled him.

The irony? The cosmic microwave background radiation definitively refuted Hoyle’s model. The universe has a beginning, and Hoyle’s mockery became the name by which the whole world knows this beginning.

This history shows that scientific resistance to the beginning of the universe was not always purely scientifically motivated. Sometimes philosophical and ideological prejudices played a role. The resistance to a beginning was, for some, resistance to the possibility of a Creator.

The Borde-Guth-Vilenkin Theorem (2003)

After the original confirmation of the Big Bang, some cosmologists tried to evade the beginning. They proposed models in which the Big Bang was not really the absolute beginning. Perhaps there was something “before” the Big Bang. Perhaps the universe went through eternal cycles of expansion and contraction. Perhaps our universe is just one of many in an eternal multiverse.

In 2003, three prominent cosmologists — Arvind Borde, Alan Guth and Alexander Vilenkin — proved a theorem that closed off these evasion routes. The Borde-Guth-Vilenkin theorem (BGV theorem) proves that any universe that has on average been expanding throughout its history must have a past space-time boundary. In other words: a beginning.

This theorem is remarkable in its generality. It does not matter what the specific physics of the early universe was. It does not matter whether the universe went through inflation or not. And if there is a multiverse that is on average expanding (and all known models assume this), then the multiverse itself has a beginning.

Alexander Vilenkin stated it unequivocally:

“All the evidence we have says that the universe had a beginning.”

And elsewhere:

“It is said that an argument is what convinces reasonable men and a proof is what it takes to convince even an unreasonable man. With the proof now in place, cosmologists can no longer hide behind the possibility of a past-eternal universe. There is no escape.”

The weight of this theorem must be appreciated. It is not a theological argument. It is a mathematical proof, published in a peer-reviewed physics journal, by three leading cosmologists of whom none is a theist. Vilenkin himself is an agnostic. Guth is one of the architects of inflationary cosmology. They were not trying to prove the existence of God. They followed the mathematics to its logical conclusion.

And that conclusion is: the universe had a beginning.

What does “beginning” mean here? Not that there was a moment in time “before” the beginning, because time itself came into being with the beginning. It means that the past is finite — that you cannot go infinitely far back in time. There is a boundary, a point at which the universe, including time itself, began to exist.

For the materialistic worldview, this is a serious challenge. If the universe was always there, one could argue that it needs no explanation — that it is just a “brute fact,” a bare fact without reason. But if the universe has a beginning, it is difficult to escape the question: What caused it?

The Kalam Cosmological Argument

The Kalam cosmological argument is one of the simplest arguments in the philosophy of religion. It has been formalised in its modern form by the philosopher William Lane Craig, but has deep roots in medieval Islamic philosophy (especially in thinkers such as al-Ghazali and al-Kindi) and is fully compatible with classical Christian theism. (Craig himself is a Molinist, a theological tradition that differs from the Reformed tradition on certain points, but the Kalam argument itself is independent of his specific theology and works fully within the framework of classical theism and the Reformed confession.)

The argument has three simple steps:

1. Everything that begins to exist has a cause.
2. The universe began to exist.
3. Therefore the universe has a cause.

Premise 1: Everything that begins to exist has a cause

This premise seems almost too self-evident to defend. Things do not appear without reason. If you wake up in the morning and there is a horse in your living room, you immediately assume there is an explanation. You do not for a moment consider that the horse came into existence out of nothing.

The principle that something cannot come from nothing (ex nihilo nihil fit, “from nothing, nothing comes”) is one of the foundational principles of rational thought. It underlies all science, all history, all everyday logic. Reject it, and you have no reason to explain anything — because then anything can appear at any time without reason out of nothing.

Yet some sceptics have questioned this premise. The most common objection comes from quantum mechanics: “But subatomic particles ‘appear’ spontaneously in a quantum vacuum!” We return to this below, but a quantum vacuum is not “nothing.” It is a physical state with energy, laws and structure. Particles that “appear” in a quantum vacuum are fluctuations within an already existing physical framework — not something coming into being out of absolute nothing.

Absolute nothing — no space, no time, no energy, no laws, no potential, no quantum field — can produce nothing. As Leibniz put it: “Why is there something rather than nothing? For nothing is simpler and easier than something.” If there were truly nothing, there would be nothing forever.

Premise 2: The universe began to exist

This premise is supported by two kinds of evidence: philosophical arguments and scientific evidence.

Philosophical arguments:

The idea of an actual, completed infinite past is philosophically problematic. An actual infinity cannot be completed by successive addition. You cannot count to infinity by adding one at a time. If the past were truly infinite, the present moment could never have been reached, because you would have had to live through an infinite number of moments to get here. It is like trying to read through a library with infinitely many books. You can never finish — and yet we claim that we are “done” with the past today.

Scientific evidence:

As we have seen, General Relativity, Hubble’s observations, the cosmic microwave background radiation and the BGV theorem all support the conclusion that the universe had a beginning. The scientific evidence over the past century has consistently pointed in one direction: the past is finite.

Conclusion: The universe has a cause

If the two premises are true, the conclusion follows inescapably: the universe has a cause. But what can we infer about this cause?

Here the argument becomes particularly interesting. If the cause brought the entire universe into being — all matter, all energy, all space and all time — then this cause must itself stand outside matter, energy, space and time. We can therefore infer that the cause of the universe must have the following properties:

• Timeless — for time itself began with the universe. The cause cannot exist within time before there was time.
• Spaceless — for space itself began with the universe. The cause does not exist “somewhere” in physical space.
• Immaterial — for all matter and energy began with the universe. The cause is not physical.
• Enormously powerful — for it brought the entire universe into being.
• Personal — and this point is critical.

Why personal? Consider: if the cause is timeless and unchanging, how can a temporal effect (the universe) ever come into being? If an operative cause is necessary and eternal, you would expect the effect to be eternal too. If the conditions for the universe’s existence were always present, why does the universe not always exist?

The only way to explain this is if the cause is a free agent — a being with the capacity to choose to create. A personal being can bring about a new effect through a free act of will, even though it had the power to do so all along. An impersonal cause does not have this capacity. If the conditions were always fulfilled, the effect would always exist.

In other words: the cause of the universe is timeless, spaceless, immaterial, enormously powerful and personal. This is precisely what the classical Christian tradition has always said about God. Not a “god of the gaps,” but a logical inference from the nature of the cause itself.

Honest Engagement with Objections

An honest intellectual conversation requires that we take the strongest objections to this argument seriously.

Objection 1: Quantum vacuum fluctuations

Some have argued that in quantum mechanics, particles can “appear from nothing” — so-called quantum vacuum fluctuations. If particles can arise without cause, why not the entire universe?

The answer is that a quantum vacuum is not “nothing.” This is one of the common errors in this debate. A quantum vacuum is a physical state: it has energy, it obeys laws, it has a structure. When particles “appear” in a quantum vacuum, this happens within an already existing physical framework with specific properties. Not creation from nothing, but a process within an already existing reality.

To try to explain the universe from a quantum vacuum merely pushes the question back one step: where does the quantum vacuum itself come from? Who or what established the laws and properties that make quantum fluctuations possible?

As the physicist and agnostic Paul Davies put it: “There is no free lunch. Someone has to pay the bill.” The quantum vacuum is not “nothing.” It is a physical state that itself requires explanation.

Objection 2: Hawking’s No-Boundary Proposal

Stephen Hawking proposed in his famous book A Brief History of Time (and later in The Grand Design) that the universe has no boundary in time — that time near the “beginning” changes form and becomes like a closed surface, like the South Pole of the earth. Just as there is nothing “south of the South Pole,” there is nothing “before the beginning.” Not because there is a beginning, but because the question no longer makes sense.

This is an ingenious proposal, but it has serious limitations.

First, it is mathematically speculative. It uses so-called “imaginary time,” a mathematical tool that does not necessarily represent physical reality. Even Hawking acknowledged that the question of whether imaginary time is real remains an open question.

Second, even if the model were correct, it does not eliminate the need for an explanation. The universe in Hawking’s model is still finite in the past. It still has a “beginning” in the sense that it does not stretch eternally into the past. The question remains: why does this closed, finite universe exist? Why is there this specific quantum-gravitational state rather than nothing?

Hawking himself posed this question, in a remarkable way, in A Brief History of Time:

“What is it that breathes fire into the equations and makes a universe for them to describe?”

This is perhaps the most theologically suggestive question a physicist has ever asked. Even if you have the complete mathematical description of the universe — all the equations, all the laws — the question remains: why is there anything for those equations to describe? Mathematics alone cannot explain why there is reality. Equations exist on paper. They do not create universes.

Hawking’s later attempts to answer this question were ironically even less satisfying. In The Grand Design (2010) he claimed that the universe could “create itself from nothing” on the basis of the law of gravity. But the law of gravity is not “nothing.” It is a physical law with specific properties. To say that the universe arose from the law of gravity does not answer the question of why there is a law of gravity in the first place, or why it has these specific properties.

The philosopher John Lennox summarised it aptly: “Because there is a law of gravity, the universe can and will create itself from nothing. The laws of physics can produce something from nothing. But what produces the laws of physics?”

The Connection with Series 1

The connections with Series 1 are remarkable.

In Series 1, Session 3, we posed the great question: “Why is there something rather than nothing?” We looked at the distinction between contingent and necessary existence. Everything we observe is contingent: it owes its existence to something else. We discussed the Principle of Sufficient Reason — the idea that for anything that exists, there must be a reason why it is so and not otherwise.

And we reached the conclusion that there must be a necessary reality — something that is not itself dependent on anything else, but that is the ultimate ground and bearer of everything that exists. In the Christian understanding, this is God: the self-existent, eternal Creator.

That argument was purely philosophical. It did not depend on any scientific discovery. Even if the universe were eternal, the contingency argument would still hold, because even an eternal universe is contingent. It does not explain its own existence.

But now we see that science has independently arrived at a finding that strengthens and supplements this philosophical argument. The universe is not eternal. It did have a beginning. It is not self-existent. It is precisely as contingent as philosophy always suspected — and now cosmology confirms it.

The two lines of evidence — the philosophical and the scientific — converge. The contingency argument says: the universe, whether eternal or not, cannot be its own ultimate explanation. The Kalam argument adds: and in fact, the universe is not even eternal. It had a beginning, making the need for a cause even more acute.

Together these arguments point to precisely what classical Christian theism has always taught: a created, dependent world that owes its existence to a necessary, self-existent God. Not a coincidental overlap. This is what we would expect if the Christian worldview is true.

Romans 1:20 says: “For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse.” (ESV) The apostle Paul did not know about the Big Bang, but he knew that creation itself points to the Creator. And now, two thousand years later, the best cosmological science confirms precisely that.

Multiverse Hypotheses

When the evidence for the beginning of the universe is discussed, the multiverse hypothesis almost always comes up as an attempt to evade the implications.

What Is the Multiverse?

The idea of a multiverse proposes that our universe is not the only one — that perhaps countless universes exist, each with potentially different natural laws and properties. There are several versions of this idea:

The “String Landscape”: In certain versions of string theory, there is an enormous number of possible configurations of the basic physical constants — perhaps 10^500 or more. Some physicists have proposed that all of these configurations are actually realised in different universes.

Eternal Inflation: According to this model, the inflationary expansion that characterised our universe’s early history is not a one-time event. Inflation continues in most of space, and occasionally a piece “breaks off” and forms a new universe with its own properties. The process continues forever into the future, even though it had a beginning in the past (as the BGV theorem confirms).

The Many-Worlds Interpretation: In quantum mechanics, this interpretation proposes that every quantum measurement “splits” the universe into branches, so that every possible outcome is realised in a separate reality.

Does the Multiverse Eliminate the Need for an Explanation?

No.

First, even if a multiverse exists, it itself needs an explanation. If there is a mechanism that generates universes — whether eternal inflation or a quantum landscape — then the question is immediately: Where does this mechanism come from? Who or what established the laws and conditions that make the generation of universes possible?

The multiverse merely pushes the question back one level. Instead of asking “Why does this universe exist?” we now ask “Why does this multiverse exist?” The fundamental question — “Why is there something rather than nothing?” — remains unanswered. A multiverse is just as contingent as a single universe. It does not explain its own existence.

Second, as we have seen, the BGV theorem has shown that even a multiverse that is on average expanding must have had a beginning. The multiverse does not escape the beginning.

Third, the multiverse is not empirically testable. We cannot observe other universes. We cannot design experiments to confirm or refute the existence of a multiverse. It is, in the strictest sense of the word, a theoretical construction — a speculation, however mathematically sophisticated.

Here lies a deep irony. The same people who often demand “scientific evidence” for the existence of God readily accept a multiverse for which there is no direct empirical evidence. The multiverse is not believed because it has been observed, but because it offers a way to explain the fine-tuning of the universe without presupposing a Creator. It is, in reality, a metaphysical commitment presented as science.

We are not saying that the multiverse is impossible. Perhaps it is true. But even if it is true, it changes nothing about the fundamental question. The multiverse, just like a single universe, is contingent. It has a beginning. It does not explain its own existence. The need for a necessary, self-existent ground of all reality remains unchanged.

Roger Penrose’s Critique

The brilliant mathematical physicist Sir Roger Penrose, a Nobel laureate and one of the most respected thinkers in theoretical physics, has voiced sharp criticism of the use of the multiverse as an explanation.

Penrose has pointed out that the multiverse does not really explain anything. It is a way to avoid the need for explanation. If you say that everything that is possible is realised somewhere in a multiverse, you explain nothing, because you have excluded nothing. A “theory” that explains everything in reality explains nothing.

Penrose has also done calculations showing that the specific state of our universe’s beginning is so improbable that even a multiverse does not help. The chance that our specific universe would arise by accident from a multiverse with the low entropy (order) that it has is so small (Penrose calculates it at 1 in 10^(10^123)) that it is not rational to attribute it to chance, even within a multiverse of unimaginable size.

Penrose is not a theist. He did not do these calculations to prove God’s existence. But his work shows that the multiverse is not the easy escape that some hope for. The precise beginning of our universe calls for an explanation that goes deeper than “chance across many universes.”

What Physics Cannot Answer

There is a widespread assumption that science, especially physics, can in principle answer all questions. If we just do enough research, conduct enough experiments, collect enough data, we will eventually know everything. This view is sometimes called scientism: the belief that science is the only reliable source of knowledge.

But physics has inherent limitations. These are not limitations of technology or knowledge that will one day be bridged. They are limitations of the nature of what physics is and what it can do.

Physics can describe the how of the universe. It can tell us what happened from the first Planck time (10^-43 seconds) after the Big Bang. It can model the expansion of the universe, describe the formation of atoms, explain the formation of galaxies.

But physics cannot answer the why.

Why is there a universe governed by these laws? Why are there laws at all? Why do these laws have specifically the properties they have? Why is there anything for physics to describe?

These questions fall outside the scope of physics. Not because physicists do not try hard enough, but because physics by nature studies the patterns and regularities of an already existing reality. It cannot explain why there is anything to study.

It is like asking why music exists by analysing the sound waves. You can precisely describe how the waves propagate, what frequencies are involved, how the ear perceives them. But you still have not explained why there is music — why there is a universe in which sound and ears and consciousness and beauty exist.

Hawking recognised this limitation. In A Brief History of Time he asked:

“What is it that breathes fire into the equations and makes a universe for them to describe? Why does the universe go to all the bother of existing?”

A beautiful formulation. The equations of physics describe the structure of the universe. But equations by themselves are just patterns, rules, abstractions. They have no power to bring anything into being. A mathematical equation can describe a circle, but it cannot create a circle. Likewise, the laws of physics can describe the universe, but they cannot explain why there is a universe to describe.

Hawking later, as we mentioned, tried to answer this question by saying that the law of gravity could “create” the universe. But this is circular reasoning: you already presuppose the existence of a physical law (gravity) to explain the existence of physical reality. The question is precisely: why are there physical laws at all?

The honest acknowledgement is that physics cannot answer the deepest metaphysical question. It can describe the structure of reality, but not explain the existence of reality. For that answer, we must look to metaphysics, to philosophy, to theology. And as we have seen, the best philosophical reasoning points to a necessary, self-existent, personal God as the ultimate ground of all reality.

This is not an admission of ignorance. It is an acknowledgement of different levels of explanation. The physicist can ask how the universe works. The philosopher can ask why it exists. The theologian can ask who created it and what its purpose is. These questions are not in competition with each other. They complement each other — like different windows looking out on the same reality.

John Lennox, the Oxford mathematician and Christian thinker, uses the analogy of a car. You can explain a car on two levels. On one level you talk about internal combustion engines, fuel, pistons and spark plugs — the “how” of how the car works. On the other level you talk about Henry Ford, who designed the car, and why he made it — the “who” and the “why.” These two explanations do not contradict each other. Both are true. Both are needed for a complete understanding.

So too with the universe. Physics can tell us how the universe works. But for the question of why it exists — what it is that “breathes fire into the equations” — we need an answer that reaches beyond physics. That answer, says the Christian tradition, is the living God who created out of free will.

The Biblical Perspective

What does Scripture say?

Genesis 1:1 — “In the beginning, God created the heavens and the earth.” (ESV)

Perhaps the most famous sentence in the entire Bible, and one of the most remarkable statements in all ancient literature. In a world where most peoples believed the universe was eternal, or that it was formed from pre-existing matter by a limited god or gods, Genesis declares that God created the heavens and the earth. The Hebrew word bara denotes a creative act attributed solely to God. Not the rearrangement of existing material. The bringing forth of something new.

“In the beginning”: there was a beginning. Not an eternal cycle. Not an infinite past. A beginning. Time, space and matter had a starting point, and that starting point was God’s creative act.

This was a radical statement in the ancient world. The Greeks, the Egyptians, the Babylonians: most assumed that the basic stuff of reality was eternal. Genesis stands virtually alone in the ancient world with the claim that everything — even the basic stuff of reality — had a beginning in God’s free creative decision.

And this is precisely what modern cosmology confirmed in the twentieth century. The universe has a beginning. It is not eternal. It is not self-explanatory. It is created.

Hebrews 11:3 — “By faith we understand that the universe was created by the word of God, so that what is seen was not made out of things that are visible.” (ESV)

This verse is remarkable. It teaches that visible reality did not arise from pre-existing visible things. It is an early, biblical expression of what theology calls creatio ex nihilo: creation from nothing. God did not build the universe out of material that was already available. He called it into being by his Word.

Psalm 33:6, 9 — “By the word of the LORD the heavens were made, and by the breath of his mouth all their host. … For he spoke, and it came to be; he commanded, and it stood firm.” (ESV)

Here we see the absolute sovereignty of God’s creative act. He spoke, and it was. No struggle, no effort, no limitation. The entire universe came into being by the mere word of God. “He commanded, and it stood firm.”

These verses sketch a picture of a God who does not labour to create, but who with absolute freedom and power decides that something shall be. The distance between “nothing” and “everything” is bridged by a single word of the Almighty.

Isaiah 40:26 — “Lift up your eyes on high and see: who created these? He who brings out their host by number, calling them all by name; by the greatness of his might and because he is strong in power, not one is missing.” (ESV)

The prophet invites us to look up — at the stars, at the heavens — and ask: Who created these? Not “what,” but “Who.” The question of the origin of the universe is not an impersonal, mechanical question. It leads to a Person.

Not a “God of the Gaps”

The biblical understanding of God as Creator is not a “God of the gaps” argument. A “God of the gaps” argument says: “We do not know how this phenomenon works, therefore God did it.” That is an argument from ignorance, and it becomes weaker as science progresses.

That is not what we are doing here. The argument from the beginning of the universe is an argument from the best available scientific knowledge, read alongside deep philosophical reasoning. We are not saying: “We do not understand the Big Bang, therefore God.” We are saying: “We understand the Big Bang very well, and its implications — that the universe has a beginning, that time and space came into being, that the cause must lie outside the physical reality — point to a transcendent, personal Creator.”

Nor is it a coincidence that the Bible and cosmology converge. The Bible has taught for millennia that the universe has a beginning — at a time when this claim was counter-cultural. Science caught up only in the twentieth century.

The theologian Robert Jastrow, an agnostic and the first director of NASA’s Goddard Institute for Space Studies, put it this way:

“For the scientist who has lived by his faith in the power of reason, the story ends like a bad dream. He has scaled the mountains of ignorance; he is about to conquer the highest peak; as he pulls himself over the final rock, he is greeted by a band of theologians who have been sitting there for centuries.”

The theologians were first at the summit. Science came later and confirmed what Scripture had always taught.

Wonder and Worship

When we consider these things — the unfolding of the universe from a beginning, the precise physical laws, the fact that we live in a universe that came into being through a single word of the Almighty — it ought to bring us to wonder and worship.

We are not talking here about abstract theory. We are talking about the reality in which we participate every day. Every star you see at night, every breath you take, every moment of consciousness: all of this exists because God spoke. The afterglow of that creation still fills the universe — literally, in the form of the cosmic microwave background radiation. We live in the reverberation of God’s creative Word.

Psalm 19:1–3 says: “The heavens declare the glory of God, and the sky above proclaims his handiwork. Day to day pours out speech, and night to night reveals knowledge. There is no speech, nor are there words, whose voice is not heard.” (ESV)

The universe speaks. Not in words, but by its very existence. It testifies to its Creator. That there is something rather than nothing, that this something has a beginning, that this beginning presupposes a Beginner: this is a silent but deafening testimony.

And the correct response to this testimony is not merely intellectual assent. It is worship. The recognition that we are small, that the universe is great, and that the God who created it is infinitely greater than anything we can conceive.

Revelation 4:11 says: “Worthy are you, our Lord and God, to receive glory and honor and power, for you created all things, and by your will they existed and were created.” (ESV)

By your will they existed. Not by chance. Not by blind processes without reason. By God’s will. The universe exists because God willed it to exist. And every moment that it continues to exist, it is because God continually sustains it by the word of his power (Hebrews 1:3).

Bridge to the Next Session

The universe had a beginning. Science confirms it. Philosophy explains the implications. Scripture has always taught it. The universe is not eternal, not self-existent, not self-explanatory. It is created. It is contingent. It has a cause: a timeless, spaceless, immaterial, powerful, personal Creator.

But the story goes further. The universe did not merely have a beginning. It had a very specific beginning. The physical constants and initial conditions of the universe are “set” with remarkable precision — so precisely that even the smallest change would make life, or even matter, impossible.

How precise? And what does it mean?

That is the subject of the next session: the fine-tuning of the universe. The universe did not merely begin. It began with an unimaginable precision that points to a rational Ground — a Logos who laid order and purpose into creation.

Notable Quotations

“All the evidence we have says that the universe had a beginning.” – Alexander Vilenkin, Many Worlds in One

“What is it that breathes fire into the equations and makes a universe for them to describe? Why does the universe go to all the bother of existing?” – Stephen Hawking, A Brief History of Time

“The best data we have are exactly what I would have predicted had I nothing to go on but the first five books of Moses, the Psalms, and the Bible as a whole.” – Arno Penzias (Nobel laureate, co-discoverer of the cosmic microwave background radiation)

“For the scientist who has lived by his faith in the power of reason, the story ends like a bad dream. He has scaled the mountains of ignorance; he is about to conquer the highest peak; as he pulls himself over the final rock, he is greeted by a band of theologians who have been sitting there for centuries.” – Robert Jastrow, God and the Astronomers

“Almost everyone now believes that the universe, and time itself, had a beginning at the Big Bang.” – Stephen Hawking, The Nature of Space and Time

“In the beginning God created the heavens and the earth.” – Genesis 1:1

Commentary on Key Scripture Passages

Genesis 1:1 — “In the beginning, God created the heavens and the earth.” (ESV)

These opening words of the Bible are at once simple and unfathomably deep. “In the beginning” immediately establishes that there was a beginning; time is not eternal. “God” is named without prior explanation. He is presented as the self-evident reality — the One who is before all other things. “Created” (bara) is a verb used in the Old Testament exclusively for God’s creative act — a deed that only God can perform. “The heavens and the earth” is a merism — an expression that denotes the totality. God created everything: all that there is.

Herman Bavinck observes that Genesis 1:1 is the foundation of the entire biblical worldview: God is absolutely sovereign, the world is entirely dependent on Him, and there is a radical distinction between the Creator and the creation. This Creator-creature distinction is one of the most fundamental principles in Christian theology.

Hebrews 11:3 — “By faith we understand that the universe was created by the word of God, so that what is seen was not made out of things that are visible.” (ESV)

This verse teaches creatio ex nihilo — creation from nothing. The visible reality was not formed from pre-existing visible material. It was called into being by God’s Word. The author says we understand this “by faith.” Not a truth that can be reached by empirical observation alone, but also not irrational. A faith-insight confirmed by reason.

Psalm 33:6, 9 — “By the word of the LORD the heavens were made, and by the breath of his mouth all their host. … For he spoke, and it came to be; he commanded, and it stood firm.” (ESV)

The Psalmist describes creation as an act of God’s Word. The emphasis lies on the sovereignty and freedom of God’s creative speech. No effort, no resistance, no limitation. God speaks, and reality obeys. Calvin comments that these verses teach us that God did not need tools or materials. His mere Word was sufficient to bring the entire creation into being.

Isaiah 40:26 — “Lift up your eyes on high and see: who created these? He who brings out their host by number, calling them all by name; by the greatness of his might and because he is strong in power, not one is missing.” (ESV)

In the context of Isaiah 40, the people in exile are comforted with the reminder of God’s unlimited power. The invitation to “look up” at the stars is an invitation to remember the Creator. The fact that God calls every star “by name” indicates intimate knowledge and sovereign control. The same God who called billions of galaxies into existence knows you by name.

Romans 1:20 — “For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse.” (ESV)

Paul teaches here that creation itself testifies to God’s existence. His “eternal power” and “divine nature” are visible in what He has made. Not an argument from ignorance, but from what we can see and understand when we honestly consider creation. That the universe has a beginning, that it is ordered, that it is comprehensible: all of this points to the Creator.

Discussion Questions

• In Series 1 we looked at the contingency argument — the idea that the universe cannot explain its own existence. How does the scientific discovery of the Big Bang strengthen this philosophical argument? Does it change your conviction, or confirm what you already believed?

• Einstein distrusted his own mathematical results because the implications (a beginning of the universe) made him uncomfortable. Can you think of other examples where people rejected scientific or philosophical findings because the consequences were unwelcome? What does this teach us about the relationship between evidence and worldviews?

• Hawking asked: “What is it that breathes fire into the equations and makes a universe for them to describe?” How would you answer this question? Can physics alone answer it, or do we need a different kind of explanation?

• The Kalam cosmological argument concludes that the cause of the universe must be timeless, spaceless, immaterial, powerful, and personal. How does this description compare with the biblical picture of God? Are there differences or points of tension?

• Some people invoke the multiverse to avoid the need for a Creator. Why does the multiverse not eliminate the fundamental question? What do you think motivates the popularity of this idea: scientific evidence, or philosophical preference?

• Genesis 1:1 was counter-cultural for centuries; most ancient peoples believed the universe was eternal. Science confirmed the biblical position only in the twentieth century. How does this fact affect your confidence in Scripture?

• The Bible teaches that God did not merely create once but continually sustains all things (Hebrews 1:3, Colossians 1:17). How does this change your understanding of the Big Bang? Is it merely something that happened long ago, or does it have ongoing significance?

• Robert Jastrow said the scientist climbing the mountain of ignorance is greeted at the top by theologians who have been sitting there for centuries. How do you respond to this image? Is it encouraging to you, or does it bring up other feelings?

Recommended Reading

• William Lane Craig — Reasonable Faith (Chapters 3–4) A thorough and accessible exposition of the Kalam cosmological argument, with full discussion of the scientific and philosophical evidence for the beginning of the universe.

• John Lennox — God’s Undertaker: Has Science Buried God? An Oxford mathematician’s clear and balanced treatment of the relationship between science and faith, with particular attention to cosmology and the limits of physics.

• Robert Jastrow — God and the Astronomers A short, readable book by the agnostic NASA scientist who tells the story of the cosmological discoveries and honestly acknowledges their theological implications.

• Stephen Hawking — A Brief History of Time Hawking’s classic work on cosmology, notable for its honest philosophical questions, even if his answers are not always satisfying. Important to read as a primary source.

• David Bentley Hart — The Experience of God: Being, Consciousness, Bliss As discussed in Series 1, Hart provides the deepest philosophical framework for understanding God as the ground of being — the metaphysical background that gives the cosmological argument its full weight.

• Alexander Vilenkin — Many Worlds in One: The Search for Other Universes The cosmologist who co-authored the BGV theorem writes about the beginning of the universe and the multiverse from a scientific perspective.

Bibliography

• Borde, Arvind, Alan H. Guth, and Alexander Vilenkin. “Inflationary spacetimes are incomplete in past directions.” Physical Review Letters 90, no. 15 (2003): 151301. — The original publication of the BGV theorem proving that any on-average-expanding universe must have had a beginning.

• Craig, William Lane. Reasonable Faith: Christian Truth and Apologetics. 3rd ed. Crossway, 2008. — A comprehensive treatment of the Kalam cosmological argument, including philosophical and scientific evidence.

• Hawking, Stephen. A Brief History of Time. Bantam Books, 1988. — Hawking’s well-known popular exposition of cosmology, with the famous question about what “breathes fire into the equations.”

• Hawking, Stephen, and Leonard Mlodinow. The Grand Design. Bantam Books, 2010. — Hawking’s later attempt to argue that the universe could create itself from nothing — a position that has been widely criticised.

• Hart, David Bentley. The Experience of God: Being, Consciousness, Bliss. Yale University Press, 2013. — The metaphysical framework for understanding God as the ground of being, giving the cosmological argument its deepest philosophical context.

• Jastrow, Robert. God and the Astronomers. W.W. Norton, 1978. — An agnostic astronomer’s account of the cosmological discoveries and their theological implications.

• Lennox, John C. God’s Undertaker: Has Science Buried God? Lion Hudson, 2009. — A balanced treatment of the relationship between science and faith by an Oxford mathematician.

• Lemaitre, Georges. “Un univers homogene de masse constante et de rayon croissant rendant compte de la vitesse radiale des nebuleuses extra-galactiques.” Annales de la Societe Scientifique de Bruxelles 47 (1927): 49–59. — Lemaitre’s original article proposing the expanding universe.

• Penrose, Roger. The Road to Reality: A Complete Guide to the Laws of the Universe. Jonathan Cape, 2004. — Penrose’s comprehensive treatment of physics, with important critiques of the multiverse and calculations on the improbability of our universe’s initial conditions.

• Vilenkin, Alexander. Many Worlds in One: The Search for Other Universes. Hill and Wang, 2006. — The cosmologist’s own account of the BGV theorem and its implications for the beginning of the universe.

• Bavinck, Herman. Reformed Dogmatics, Vol. 2. — A Reformed theological treatment of God as Creator and the doctrine of creatio ex nihilo.

• Calvin, John. Institutes of the Christian Religion, Book 1. — Calvin’s treatment of God as Creator and the sensus divinitatis present in every person.