Reconnaissance Orbiter Captures Live North Pole Avalanche on Mars

This amazing photo was captured late last month by the Mars Reconnaissance Orbiter as it flew over the north pole of the red planet. It shows fine-grains and chunks of ice falling down the side of a 2,300-foot-high cliff and then creating a huge dust cloud on the gentle slopes below. Click through for more detailed… » 3/04/08 10:10am 3/04/08 10:10am