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An illustration of what Mars might have looked like some 3.5 billion years ago when an ocean likely covered one-third of the planet’s surface, according to a new University of Colorado at Boulder study. (Illustration by University of Colorado)
Keywords: News Services,News Services Photos,news,Mars_global_ocean.jpg,CuBoulderNewsPhotosItem ID: 1661
Created: 7/14/2010 15:16:44

