The north pole of Mars is slowly sinking under the weight of an ice cap that only formed within the past few million years. And, in the process, it's telling us something about what the planet's ...

If you've ever looked at Mars through a telescope, you probably noticed its two polar ice caps. The northern one is made ...

Gravity will be a challenge — scientists are worried that Mars lacks the "pull" to keep whatever atmosphere is created. Thawing the Pole The Martian South pole has a coating of dry ice (which is ...

Did you know that Mars has *iridescent* clouds? Spotted by the @MarsCuriosity rover, these unique clouds are made of carbon dioxide ice and are only observed at twilight. What this helps us learn ...

Why it's so special: These odd, fan-like features on the surface of Mars are geysers of gas and dust near the planet's south pole that are visible only in springtime on the Red Planet. This image ...