Before the Big Bang: A Twin Universe?
April 10, 2008 | Source: PhysOrg.com
The universe that came before ours was its identical twin, a new study by Alejandro Corichi from Universidad Nacional Autonoma de Mexico and Parampreet Singh from the Perimeter Institute for Theoretical Physics suggests.
Since the pre-bounce universe is contracting, it will look as if we were looking at ours backward in time.