The Trump administration wants to close one of the nation’s two cutting-edge observatories — one of them in the Tri-Cities — ...

The three-dimensional world of ordinary experience—the universe filled with galaxies, stars, planets, houses, boulders, and ...

The voluble billionaire discusses his mission to transform health care, why Kamala lost, the problem with Bluesky, and much ...

Others explore dark energy as something more dynamic. Still, others question whether Einstein’s theory of general relativity needs a rewrite. Testing these ideas requires vast sky surveys that ...

They found that the Lorentz contraction—a key part of Einstein’s theory of special relativity—doesn’t actually change how a fast object looks in a photograph. Instead, the object seems ...

It was a hundred years ago this November, and Albert Einstein ... relativity’s equations. Hilbert considered it fair game to pursue an opening in a promising but as yet unfinished theory of ...

also happens to be a stunning illustration of Einstein's theory of general relativity. So much so that the cosmic phenomenon is called an "Einstein ring." Einstein rings happen when light from one ...

"Since it is a direct prediction of Einstein's theory of general relativity, its observation would serve as a confirmation of the theory, much like the observation of gravitational waves by LIGO ...

Dark matter, dark energy, the Hubble tension: underpinning these theories is Einstein’s general theory of relativity, which treats space and time as a unified “spacetime” and considers ...

Black holes and soccer balls don't have much in common, but if black holes are curved when kicked, it might say something deep about the cosmos.

Their observations line up with what Einstein's theory of general relativity predicts. Gravity has shaped our cosmos. Its attractive influence turned tiny differences in the amount of matter ...

A cosmological constant is a famous part of Einstein's General Relativity theory, and refers to an arbitrary constant that is present in all related field equations. Finally elementary particles ...