Einstein's theory of general relativity predicts that massive objects warp the space-time around them. NASA's Gravity Probe B found that the space-time around Earth is indeed curved by our planet, and ...

Editor's note: Scientists said today that after more than a half-century search, they have finally detected gravitational waves — the ripples in the fabric of space-time that Albert Einstein predicted ...

It's 2 a.m., and the noise from your upstairs neighbor is keeping you awake again. Take solace in the fact that by living above you he may be shortening his life, even if only by a tiny fraction of a ...