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 ...

Dozens of mysteriously dense blobs — including one surprisingly pooch-shaped structure — are lurking beneath an ancient ...

Did you know at Mars' north pole, there's an ice cap in the springtime that's as big as the state of Texas? As warm, strong winds whirl across the region, deep troughs are carved out as the ice thaws.

Europe's Mars Express spacecraft recently revealed a captivating sight on Mars, capturing the collision of massive sand dunes with layers of dusty ice at the planet's north pole—a phenomenon ...