For decades, the Big Bang has been the reigning champion in explaining the universe's origin. It's the moment, roughly 13.8 ...

The center of the universe isn’t real. A physicist unpacks why space expands everywhere at once, proving there's no central ...

About a century ago, scientists were struggling to reconcile what seemed like a contradiction in Albert Einstein's theory of ...

The paper, a densely mathematical treatise, concluded with the startling prediction that our universe may not ... and beliefs to expand the frontiers of knowledge. Dr Cormac O’Raifeartaigh ...

Astronomers have proposed a new theory to suggest why our universe is expanding at an accelerating rate. That our universe is expanding is in wide agreement, though how exactly that process ...

This excellent question forces us to confront a region beyond the bounds of our ... universe contains everything — it is a closed space-time system. One could say that the universe isn’t ...

Perception, though, is not reality: our eyeballs don’t hint that beyond nearby planets, stars and galaxies, everything is moving away from us. The universe is constantly expanding—at an ever ...

Ever since the early 20 th century, we’ve known that the universe is expanding. Exactly how quickly it’s expanding, however, remains something of a vexed question. Until now, our theoretical ...

The universe still is expanding and cooling, leaving fossil evidence from what happened as the universe expanded. These fossils are the evidence that our universe really is evolving. Yet the theory of ...

When it comes to measuring how fast the Universe is expanding, the result depends on ... an increased significance of the Hubble tension. "Our study confirms the 73 km/s/Mpc expansion rate ...