As winter descends on Mars' southern hemisphere, forming tell-tail frost in the lengthening shadows, the opposite is true in the northern hemisphere -- spring has sprung and the northernmost dunes are beginning to thaw.
The equator of Europa and other icy moons of Jupiter may have some especially bizarre, spiky landscapes that would be big trouble for landing spacecraft.
Despite speculation to the contrary, Comet ISON is holding its own against the sun's heat, with its cometary nucleus apparently remaining as a solid mass.
A planet-wide storm on Saturn reveals the first evidence of water ice.
If you think that a snowball's chance on Mars is roughly the same as one in the mythical netherworld, park your eyes on this: It's ice in the pit of a Martian crater. The pictures were taken by NASA's sharp-eyed Mars Reconnaissance Orbiter, which found highly pure, bright ice in five newly formed c...
Spectacular pillars of cold hydrogen and dust found in the Carina Nebula create a stunning photo.