Science > Water

Sub-glacial melting, not flowing rivers, may explain martian channels

5 monthes ago   |   By Astronomy Now

A collage showing Martian valleys at top superimposed with glacial meltwater channels on Devon Island in the Canadian arctic at bottom. The similarity of the channels is striking, prompting research suggesting many valleys on Mars were carved by glacial meltwater, not flowing rivers. Image: Composite by Anna Grau Galofre/Arizona State University
As NASA's Perseverance Mars rover hurtles toward the red planet to search for signs of ancient microbial life in river delta and lakebed deposits, new research indicates many of the valley networks scarring the surface of Mars were caused by water...
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