Sunday, July 24, 2011

Gale Crater

NASA has selected Gale Crater as the landing site for its Mars Science Laboratory, which features the huge, sophisticated Curiosity rover. MSL is due to land on Mars in August, 2012.

Gale is a large crater-- 96 miles across, with a three mile high central peak. It also has a fascinating geology. Many features strongly suggest the presence of liquid water on the surface for extended periods of the past, for instance. The central peak also looks to be geologically layered. If Curiosity can reach the peak, scientists believe the layers can tell them the geologic history of Mars going well back in time just as sediment layering on Earth tells geologists about our world.

Given the timescales accessible for study in Gale coupled with the likely presence of past water, scientists believe the crater is also an excellent place to pursue the question of whether life ever existed on Mars.

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