The Theory of Relativity, developed by Albert Einstein in the early 20th century, completely transformed the way we understand the universe. Before it, physics was largely based on the laws of motion ...

PARIS, France — Albert Einstein’s handwritten notes for the theory of relativity fetched a record 11.6 million euros ($13 million) at an auction in Paris on Tuesday. The manuscript had been ...

For over a century, Einstein's general theory of relativity has been key to understanding gravity. But new research suggests this theory "glitches" in the farthest reaches of space. That doesn't ...