A new theory of gravity could explain cosmic acceleration without dark energy
The accelerating expansion of the universe is usually explained by an invisible force known as dark energy. But a new study suggests this mysterious ingredient may not be necessary after all. Using an extended version of Einstein’s gravity, researchers found that cosmic acceleration can arise naturally from a more general geometry of spacetime. The result hints at a radical new way to understand why the universe keeps speeding up.
These Mathematicians Are Trying to Educate A.I.
Large language models struggle to solve research-level math questions. It takes a human to…
