Recent discoveries have reignited excitement and curiosity in the scientific community, suggesting the possible existence of ...

In 1916, Albert Einstein discovered that his theory of general relativity predicted the existence of gravitational waves — ...

For now, plenty of questions remain unanswered — about multiple universes and the reality of our own, she said. "None of these can be proven — but they're fun to think about," Macdonald said.

In that sense, multiple universes exist outside our own visible universe simply because the light from them hasn't had enough time to reach us. The implications are mind-bending.

2. Bubble Universes In addition to the multiple universes created by infinitely extending space-time, other universes could arise from a theory called "eternal inflation." ...

Multiple universes are accessed, in fiction, through portals in space or mystical necklaces or sometimes just in dreams, but always when characters break the rules of space time. In reality ...

The universe is constantly expanding, but how do scientists think about what it's expanding into?

2. Bubble Universes In addition to the multiple universes created by infinitely extending space-time, other universes could arise from a theory called "eternal inflation." Inflation is the notion ...

According to string theory and cosmology, infinite universes may exist. According to string theory and cosmology, infinite universes may exist. NASA / ESA In another universe you might have become ...

There are lot of disagreements on the number of universes: is there an infinite number; strictly one; or various extensions of our universe? Some are of the view that idea that multiple universes ...