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Spirit, the Mars Rover, Left to Die Before Its Time

The brave, unflagging Mars rover Spirit, who has lived on the Red Planet for almost four years, has been given a death sentence by the U.S. government. Right now, the little robot is resting on a sunny slope, waiting out the winter and preparing to do more tests on the Martian atmosphere. But now it looks like Spirit… » 3/25/08 7:00am 3/25/08 7:00am

Sulfuric Acid Floods Created Martian "Grand Canyon"

Unusual fan-shaped features cut into the Martian surface were caused by sulfuric acid "water" exploding from underground and sweeping across the surface of the planet. Yesterday a team of European and US scientists announced this finding, which is based on satellite data from a European Space Agency satellite in… » 2/21/08 7:00am 2/21/08 7:00am