Add Yahoo as a preferred source to see more of our stories on Google. A telescope image of warped yellow starlight forming a smily face against a black background Scientists could soon test Einstein's ...

A millimeter might not seem like much. But even a distance that small can alter the flow of time. “This is fantastic,” says theoretical physicist Marianna Safronova of the University of Delaware in ...

Albert Einstein's general theory of relativity describes how the fabric of space and time, or spacetime, is curved in response to mass. Our sun, for example, warps space around us such that planet ...

The question of how gravity interacts with the quantum world has long perplexed physicists, but a non-quantum theory of space-time could present an answer ...