Although most of the times far less spectacular in size and manifestation than the ones occurring on Earth, natural processes do take place on now-dead Mars. And one of the most common such processes ...

It's springtime on Mars and the mysterious polygons are in bloom, a new image from the orbiting High Resolution Imaging Experiment (HIRISE) camera shows. Recorded on March 30, the image reveals a ...

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Scientists have cracked a long-standing Martian mystery. Those seasonal gullies on sand dunes that everyone thought were made by water. Turns out, carbon dioxide (CO₂) ice, or dry ice, is the culprit.

A quarter set in a block of dry ice rocks back and forth due to subliming carbon dioxide flowing past it. The sounds are great. Put on your safety goggles and gloves. Firmly push the room-temperature ...