Much like an alien threat from another world, the multiverse is taking over. Some of the biggest movies and TV shows of our time are tackling the idea of multiple alternate realities that can often ...

The idea that other universes - as well as our own - lie within "bubbles" of space and time has received a boost. Studies of the low-temperature glow left from the Big Bang suggest that several of ...

NEW YORK — Whether you believe our universe is unique or one of many coexisting realities, there's a scientific model that backs up your views. Cosmologists on both sides debated the issue June 1 here ...

Sabine Hossenfelder is a research fellow at the Frankfurt Institute for Advanced Studies in Germany. Her research focuses on general relativity and quantum gravity. She is author of the blog ...