Scientists have found evidence of enough liquid water on Mars to cover the entire planet with an ocean a mile deep, according to new research published Monday, and which scientists said could, in ...

Small lakes on ancient Mars may have remained liquid for decades, even with average air temperatures well below freezing.

Mars has a history of liquid water on its surface, including lakes like the one that used to occupy Jezero Crater, which have long since dried up. Ancient water that carried debris—and melted water ...

Water acts familiarly at familiar temperatures. It freezes into ice at 32 degrees Fahrenheit, which corresponds to 0 degrees Celsius and 272 Kelvin. But "supercooled," water can remain liquid even at ...

Liquid water is an important prerequisite for life to develop on a planet. As researchers report in a new study, liquid water could also exist for billions of years on planets that are very different ...

Deep beneath the surface of Mars lies a large reservoir of liquid water, according to seismometer data from NASA’s retired InSight lander. The findings, published Aug. 12 in Proceedings of the ...

Europa’s frozen surface is covered with distinctive pairs of ridges that straddle troughs of ice. These double ridges are the most common features on the Jovian moon. But scientists don’t yet have a ...

A Mars orbiter has detected a wide lake of liquid water hidden below the planet’s southern ice sheets. There have been much-debated hints of tiny, ephemeral amounts of water on Mars before. But if ...

Many exoplanets could harbor flowing water underneath ice shells. Credit: Illustration by Mark Garlick / Science Photo Library via Getty Images The chance of finding worlds in the Milky Way with water ...