All planets are made of gas, ice, rock and metal, and models of how planets form usually assume that these materials don't ...

Scientists are confident Mars was once abundant with water, as seen in massive flood-carved channels, ancient river valleys, ...

What if the insides of planets are more complicated than we thought? A new study from scientists at UCLA and Princeton ...

Seismic readings of the interior of Mars strongly suggest large quantities of water buried 6 to 12 miles underground.

Why are glaciers melting so fast, and why does it matter? Learn how glacier preservation is key to water security and climate ...