Editing Hartle–Hawking state (section)

==History==
According to the Hartle–Hawking proposal, the universe has no origin as we would understand it: before the [[Big Bang]], which happened about 13.8 billion years ago, the universe was a [[Gravitational singularity|singularity]] in both space and time. Hartle and Hawking suggest that if we could travel backwards in time towards the beginning of the universe, we would note that quite near what might have been the beginning, time gives way to space so that there is only space and no time.<ref>{{cite web |last=Hawking |first=Stephen |date=1996 |title=The Beginning of Time |url=https://www.hawking.org.uk/in-words/lectures/the-beginning-of-time |url-status=live |archive-url=https://web.archive.org/web/20141006200729/http://www.hawking.org.uk/the-beginning-of-time.html |archive-date=6 October 2014 |access-date=10 March 2014 |website=Hawking.org.uk}}</ref>