Physicist Neil Turok's theory suggests a mirror universe existed before the Big Bang, running backward in time, potentially ...

They can't all leave a big bang. Welcome to MsMojo, and today we’re counting down our picks for “The Big Bang Theory” ...

Multiverse theory suggests that infinite universes with slight variations exist, each creating different outcomes. It implies our universe is just one of countless others, possibly with distinct laws.

When we go backwards in time through the history of the cosmos, the distances and volumes shrink, while the average energy ...