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Astrobiology: Latest News


2002-09-10 | MISSIONS
No Drought of Mars Landing Sites

Scientists and engineers continue to reevaluate their list of possible landing sites for the two Mars Exploration Rovers. The latest revision remains at four candidate sites:

The Elysium Planitia site replaces Melas Chasma, which was cut from the roster last spring when scientists discovered uneven terrain that could topple the lander, and blustery winds that could tilt its landing rockets away from the surface. Winds in Elysium Planitia, by contrast, are thought to blow more gently. Eos Chasma, previously designated as a backup site, has now been eliminated from further consideration for similar safety concerns. But the remaining sites all hold promise for confirming that water flowed over ancient Mars. Gusev Crater, for example, appears to be an ancient lakebed. The Hematite site, as its name implies, is scattered with large deposits of hematite, a mineral that on Earth usually forms in water. The site selection team plans to pick the final two landing sites after the next Mars Exploration Rover Landing Site Workshop in January.

Scientists have garnered much of their knowledge of these regions from images taken by the Viking orbiters of the 1970s and by the veteran Mars Orbiter Camera (MOC) aboard the Mars Global Surveyor. This year, the Mars Odyssey spacecraft joined Mars Global Surveyor in scrutinizing the Martian surface from above.


More on this story

Full text of original item from Astrobiology Magazine, Sep 10, 2002

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Jun 26, 2002 | SCIENCE, MISSIONS
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Apr 24, 2002 | MISSIONS
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Mar 25, 2002 | SCIENCE, MISSIONS
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Mar 15, 2002 | SCIENCE, MISSIONS
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Mar 04, 2002 | SCIENCE, MISSIONS, TECHNOLOGIES
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Feb 27, 2002 | SCIENCE, MISSIONS
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Feb 06, 2002 | SCIENCE, MISSIONS
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Dec 19, 2001 | MISSIONS, TECHNOLOGIES
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Dec 13, 2001 | SCIENCE, MISSIONS
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Dec 12, 2001 | SCIENCE, MISSIONS
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(NASA Astrobiology Institute) - Photos indicate that Mars' climate is changing even now.

Nov 15, 2001 | MISSIONS, TECHNOLOGIES
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Aug 01, 2001 | SCIENCE, MISSIONS, TECHNOLOGIES
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Jul 17, 2001 | MISSIONS, TECHNOLOGIES
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Mar 28, 2001 | SCIENCE, MISSIONS, TECHNOLOGIES
The Lure of Hematite
(Science@NASA) - On rusty-red Mars, a curious deposit of gray-colored hematite (a mineral cousin of common household rust) could hold the key to the mystery of elusive Martian water.

Mar 27, 2001 | MISSIONS
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Mar 02, 2001 | SCIENCE, MISSIONS
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Feb 21, 2001 | SCIENCE, MISSIONS, EDUCATION
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Dec 22, 2000 | SCIENCE, MISSIONS
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Aug 25, 1999 | MISSIONS
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The preceding news links are provided as a public service for interested users. The views and claims expressed in external internet sites are not necessarily those of NASA.

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