Learn about two black hole mergers in 2024 that experts revisited with new information from gravitational waves, confirming theories made by Albert Einstein.

On May 29, 1919, a total solar eclipse helped to prove Albert Einstein's theory of general relativity. Einstein's theory suggested that gravity could bend light by curving the fabric of spacetime. To ...

There are a lot of theories being shared around social media these days. And while some of them are more extreme than others — like the idea that the Large Hadron Collider caused an alternate universe ...

Scientists: Model shows how collision could have caused distinct lunar features. Aug. 4, 2011 — -- "Goodnight Moons"? "The cow jumped over the moons"? If a new theory published in Wednesday's ...