Avalanche!

On Mars.. In the photo, left to right, bright (white) carbon dioxide frost at the edge of the northern polar region, a 700m cliff, and the cloud of debris at the base of the cliff. Image from the High Resolution Imaging Science Experiment on NASA’s Mars Reconnaissance Orbiter. More on the avalanche[s] here. Image Credit: NASA/JPL-Caltech/University of Arizona. Btw, there’s another stunning image below the fold.
Photobucket

Most of the stunning astronomical photos are of elsewhere.. this one is of here. The view from Mars.

Photobucket