At extreme pressures and temperatures, water becomes superionic — a solid that behaves partly like a liquid and conducts ...

The Solar System has proved a surprising place, and perhaps one of the biggest surprises is that Earth isn't the only world with liquid water on its surface. Sure, there's a tiny bit that temporarily ...

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 ...

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 ...

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 ...