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Gamma-Ray Evidence Suggests Ancient Mars Had Oceans
An international team of scientists who analyzed data from the Gamma Ray Spectrometer onboard NASA's Mars Odyssey reports new evidence for the controversial idea that oceans once covered about a third of ancient Mars.
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NASA's Mars Odyssey Shifting Orbit for Extended Mission
The longest-serving of six spacecraft now studying Mars is up to new tricks for a third two-year extension of its mission to examine the most Earthlike of known foreign planets.
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NASA Mission Finds New Clues to Guide Search for Life on Mars
NASA's Mars Odyssey orbiter has found evidence of salt deposits. These deposits point to places where water once was abundant and where evidence might exist of possible Martian life from the Red Planet's past.
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Astronomers Monitor Asteroid to Pass Near Mars
Updated: Jan 9, 2008
As expected, scientists at JPL's Near-Earth Object Office have further refined the trajectory estimate for asteroid 2007 WD5 and ruled out any possibility of a Mars impact on Jan.
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Alignment on December 24, 2007
This is a special day that happens only every 26 months when Earth is exactly between the Sun and Mars. Find out more about opposition and experiment with Mars and Earth in their orbits.
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NASA Orbiter Finds Possible Cave Skylights on Mars
NASA's Mars Odyssey spacecraft has discovered entrances to seven possible caves on the slopes of a Martian volcano.
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