Ajit Pai @AjitPai
Was there a time when time didn't exist? @QuantaMagazine on the debate spurred by Stephen Hawking's 1981 "no-boundary" proposal that there was no such thing as time before the Big Bang and that the universe "expanded from a point of zero size." https://t.co/Xrjdjpj2UX — PolitiTweet.org