Website review: A Colorful Mars - The New York Time...
parataxic discovered this in Space Exploration
•1 reviews since Mar 6, 2008
space-exploration
•nytimes.com/slideshow/2008/03/05/science/spac...
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parataxic discovered 4 months ago- A Colorful Mars "These valleys in the Melas Chasma section of Mars appear to have been carved by rain rather than ground water flowing out of the ground. " NASA's Mars Reconnaissance Orbiter captured dust billowing up from an avalanche on Feb. 19 that had just fallen down a steep cliff near Mars' north pole. Nearby three other smaller avalanches occurred at almost the same time. The slope is facing south, and one possibility is that the warmth is sublimating ice and causing blocks to tumble down the 65-degree slope. A section of the Aureum Chaos region of Mars in false color reveals layers of light-toned rocks. Other instruments on Mars Reconnaissance Orbiter have detected sulfate salts and the mineral hematite in these light-toned rocks -- similar composition to the rocks that the rover Opportunity detected in its trek across Meridiani Planum. These indicate the possibility of a wet but acidic environment early in Mars' history.
