For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational ...

For over 100 years, two theories have shaped our understanding of the universe: quantum mechanics and Einstein’s general relativity. One explains the tiny world of particles; the other describes ...

A newly detected gravitational wave, GW250114, is giving scientists their clearest look yet at a black hole collision—and a powerful way to test Einstein’s theory of gravity. Its clarity allowed ...

Mind = blown.

Observing time distortions could show whether Einstein's theory of general relativity accounts for the mysteries of dark matter and dark energy. When you purchase through links on our site, we may ...

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 ...

‘I love the idea that this basic principle that Einstein told us about a long time ago is something you can see,’ CU Boulder astrophysicist says Scientists who study the cosmos have a favorite ...

For more than a century, modern physics has rested on two towering frameworks that do not quite agree with each other.