Einstein’s theory of general relativity suggests that our universe originated in a Big Bang. But black holes, and their gravitational forces, challenge the limits of Einstein’s work.

Einstein's theory of general relativity predicts that all objects fall the same way, no matter how massive — even zombie stars with extreme gravity, a new study finds.

Researchers say the image helps confirm predictions from Einstein's theory of general relativity. The same instrument, called the Event Horizon Telescope, captured the first-ever image of a black ...

In pure general relativity, with no other modifications or considerations of other physics, they remain black for eternity. Once one forms, it will just hang out there, being a black hole, forever.

By the end of this video, you'll understand how general relativity completely changes our perspective on gravity, revealing it not as a force but as a result of the curvature of space-time.

Albert Einstein's theory of general relativity—which explains gravity as the product of the distortion of space and time—may not be universally applicable. This is the conclusion of physicists ...

Over 100 years ago Einstein first described his general theory of relativity. This theory had a profound effect on physics and our understanding of the universe. But does it still matter today?

In the 109 years since it was first formulated, general relativity has remained our finest description of gravity on a galactic scale; time and again, experiments have confirmed its accuracy. This ...

The first image of a black hole, captured in 2019, has revealed more support for Albert Einstein’s theory of general relativity. The new finding has suggested his theory is now 500 times harder ...

For the first time, a mathematical framework proves that Einstein’s theory of general relativity, which explains the relationship between space, time, and gravity, is in alignment with quantum ...

When the first-ever image of a black hole was released in April 2019, it marked a powerful confirmation of Albert Einstein’s theory of gravity, or general relativity. The theory not only ...