Growing evidence suggests that a subsurface ocean lurks beneath the icy surface of Uranus' moon Ariel, but new research, ...

Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space probes and astronauts.

"We're squeezing the last bit of science we can from Voyager 2's images." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Over the last few ...

The ocean on Ganymede may have more water than all the water on Earth. In this artist’s concept, the moon Ganymede orbits the giant planet Jupiter. NASA’s Hubble Space Telescope observed aurorae on ...

Saturn's innermost moon, which resembles the Death Star from Star Wars, may be a "stealth" ocean world, according to new research. Mimas, which is the smallest and closest to Saturn of the ringed ...

"We know that some microbes on Earth can tolerate the range of pH found on Enceladus." NASA's Cassini spacecraft has flown through the plumes of water vapor spewing out from the ocean inside Saturn's ...