Two teams of astronomers led by scientists at Caltech, have discovered the largest reservoir of water ever detected in the universe. And it's 30 billion trillion miles away. Yep, you read that ...

Astronomers have been looking for signs of life in other galaxies and planets. But what if life doesn't need a planet to ...

Free-floating, planetary-mass objects that are just drifting carefree through the galaxy, untethered and starless, appear to be able to generate their own systems of moons, like a planetary system on ...

Buckle up, nerds: NASA is building the first quantum gravity sensor for space—a suitcase-sized instrument that could soon be measuring everything from subterranean water to hidden reserves of ...