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Mars Express' mooch around the red planet has yielded another set of snaps it felt worthy of adding to its Facebook wall. It's spent some time looking at the Reull Valliss, a dry river that runs for the better part of 932 miles (1,500km) through the Promethei Terra highlands -- and in some places ...

2 years ago 0 Comments
January 20, 2013 at 6:00PM