Home > Astronomy, Mars, Solar System > Gusev Crater Once Held A Lake After All, Says ASU Mars Scientist

Gusev Crater Once Held A Lake After All, Says ASU Mars Scientist


Photo by: NASA/JPL-Caltech/Cornell University/Arizona State University

Photo by: NASA/JPL-Caltech/Cornell University/Arizona State University

If desert mirages occur on Mars, “Lake Gusev” belongs among them. This come-and-go body of ancient water has come and gone more than once, at least in the eyes of Mars scientists.

Now, however, it’s finally shifting into sharper focus, thanks to a new analysis of old data by a team led by Steve Ruff, associate research professor at Arizona State University’s Mars Space Flight Facility in the School of Earth and Space Exploration. The team’s report was just published in the April 2014 issue of the journal Geology.

The story begins in early 2004, when NASA landed Spirit, one of its two Mars Exploration Rovers, inside 100-mile-wide Gusev Crater. Why Gusev? Because from orbit, Gusev, with its southern rim breached by a meandering river channel, looked as if it once held a lake – and water-deposited rocks were the rover mission’s focus. Yet, when Spirit began to explore, scientists found Gusev’s floor was paved not with lakebed sediments, but volcanic rocks.

Link To Full Story

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