28 enero 2015
Gullies carved into impact craters on Mars provide a window into climate change on the Red Planet. A new analysis suggests Mars has undergone several ice ages in the last several million years. The driver of these climate swings is likely the Red Planet’s wobbly axis tilt.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/qLmx75acqNY/150128152205.htm
