Add Yahoo as a preferred source to see more of our stories on Google. The nearby Andromeda galaxy with older stars highlighted in blue. A new theory of quantum gravity could help explain why more ...

Physicists have long assumed that the universe is pretty much the same in any direction, and now they've found a new way to test that hypothesis: by examining the shadow of a black hole. If that ...

Scientists have tested gravity across some of the largest structures in the universe and found that it behaves exactly as predicted by long-standing physical laws. Researchers led by University of ...

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The Big Bang purportedly transpired 13.8 billion years ago, and even so, the universe continues to expand even today. But if that thought alone wasn’t impressive enough, scientists also believe that ...