If you've ever looked at Mars through a telescope, you probably noticed its two polar ice caps. The northern one is made largely of water ice—the most obvious sign that Mars was once a wetter, warmer ...

Researchers have provided a simple and comprehensive -- if less dramatic -- explanation for bright radar reflections initially interpreted as liquid water beneath the ice cap on Mars' south pole.

The cool conditions which have allowed ice caps to form on Earth are rare events in the planet's history and require many complex processes working at once, according to new research. The cool ...

Since 1979, Arctic ice has shrunk by 1.35 million square miles, a new JPL study found ice loss in Greenland is far worse than previously thought and Antarctic ice is now at the lowest level since ...

A swirling mound of ice riddled with dark spiral troughs crowns the north pole of Mars, seen here in a new mosaic from ESA’s Mars Express. The mosaic comprises 57 separate images taken by the High ...

Cornell University researchers have provided a simple and comprehensive—if less dramatic—explanation for bright radar reflections initially interpreted as liquid water beneath the ice cap on Mars' ...