Theory of Relativity in Space: Latest science, tests and images

Albert Einstein's theory of general relativity is a monumental achievement of human ingenuity, creativity and perseverance — to say the least.

Stephen Hawking may have been a world-renowned genius, but he didn't take himself too seriously, according to a tribute published online today (April 12) in the journal Science.

Those inspired by Stephen Hawking's classic book "A Brief History of Time" and by his legacy in cosmology are now picking up where Hawking's genius left off.

There's a lot we still don't know about black holes, but these light-gobbling behemoths would be even more mysterious if Stephen Hawking hadn't plumbed their inky depths.

A dedicated scientist engaged an audience of college students and local leaders in New York on the emerging field of gravitational wave astronomy.

The gravitational-wave research community seems to be having a remarkable string of good luck. Here's what the smashing finding means.

Three scientists revealed humorous and touching reactions to discovering that they had received the 2017 Nobel Prize in physics.

The Nobel Prize is just the beginning for the new field of gravitational astronomy.

Einstein would be pleased — but flabbergasted — to hear the details of humanity's first direct detection of gravitational waves, according to one of three new Nobel winners for the discovery.