Harvard scientists studying the mystery of water and life on ancient Mars believe they may have finally found a solution.

Yet the planet has been long theorized to have been habitable many millions of years ago, with oceans of liquid water. According to the researchers, however, Venus's atmosphere is simply too dry ...

NASA's Rover found ripples in Martian rock that resemble the wave patterns on a sandy lake bed on Earth. The ripples could ...

Our Solar System, like a sneaky little hobbit, seems to have stuffed its pockets full of hidden oceans. Jupiter, Saturn, Uranus, and Neptune all have moons astronomers think might be harboring liquid ...

Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But do other planets in the solar system have them too?

Satellites have managed to detect faint electromagnetic signals generated by ocean tides ... the motion of other liquid masses on Earth, including magma below the planet's surface.