Why the big bang may not have been the beginning of the universe

We once thought the big bang was a single moment, but physicists are now settling on a different version of events, writes Chanda Prescod-Weinstein

Why the big bang may not have been the beginning of the universe
We once thought the big bang was a single moment, but physicists are now settling on a different version of events, writes Chanda Prescod-Weinstein