However we do not have to worry about the universe-obliterating Big Rip yet because if it happens it would happen in about 22 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of galaxies curving the fabric of space-time in an expanding universe. A new ...

Mathematical quirks of our universe have led some cosmologists to wonder whether the cosmos was actually born in a black hole ...

For more than a century, physics has been built on two great theories. Einstein's general relativity explains gravity as the ...

To astronomers in the 1990s, these three facts were self-evident: The universe is expanding; all the matter in the universe is gravitationally attracting all the other matter in the universe; ...

Scientists propose that gravitational waves shaped the universe. Their model challenges inflation theory. How exactly did the ...

Dark energy—the term used to describe whatever is causing the universe to expand at an increasing rate—is one of the universe ...

The accelerating expansion of the universe could be explained by modifying general relativity so that gravity has mass – or so thinks a small group of physicists. Matthew Francis reports What lies ...

Astronomers use many methods to determine this number, including gravitational lensing, the universe’s expansion rate, and more.

It might not be obvious to those of us only grappling with more mundane concerns, but for cosmologists bent on unlocking the universe’s deepest secrets, there’s no shortage of problems keeping them up ...

An artist's impression of how the very early universe (less than one billion years old) might have looked when it went through a voracious onset of star formation, converting primordial hydrogen into ...