The new map was created using data from the InSight ... underground ocean and the abundant frost discovered on top of Mars' volcanoes, researchers also discovered massive chunks of ice buried ...

"Mars’ tallest volcano, Olympus Mons, appears as a prominent dark region near the top of the images, with a small white cloud at the summit that grows during the day. Olympus Mons appears dark ...

How do you celebrate? With a knockout new image showing off Mars’ massive volcanoes, rugged valleys and ethereal clouds. There’s even a special guest star: a moon. The European Space Agency ...

This story appears in the November 2016 issue of National Geographic magazine. In winter the temperature at the poles of Mars can reach 200° below zero Fahrenheit. But make no mistake: The red ...

Researchers used gravity field data from satellites to probe the internal structure of Mars. The identified dense structures could either be volcanic formations or remnants of ancient impacts.