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Wed, Jun 10, 2009

Mars Orbiter Back In Business

Unexpected Re-Boot Still A Mystery

NASA's Mars Reconnaissance Orbiter is examining Mars again with its scientific instruments after successfully transitioning out of a precautionary standby mode triggered by an unexpected June 3 rebooting of its computer.

Engineers brought the spacecraft out of the standby mode on June 6. Cameras and other scientific instruments resumed operation June 9.
The Mars Reconnaissance Orbiter reached Mars in 2006 and has returned more data about the planet than all other Mars missions combined.

The June 3 rebooting resembled a Feb. 23 event on the spacecraft. Engineers are re-investigating possible root causes for both events. The new investigation includes reconsidering the likelihood of erroneous voltage readings resulting from cosmic rays or solar particles hitting an electronic component.

NASA's Mars Reconnaissance Orbiter, launched in August, 2005, carries the most powerful camera ever flown on a planetary exploration mission for homing in on details of Martian terrain with extraordinary clarity. While previous cameras on other Mars orbiters were able to identify objects no smaller than a dinner table, this camera is able to spot something as small as a dinner plate. This capability provides not only an astoundingly detailed view of the geology and structure of Mars, but helps identify obstacles that could jeopardize the safety of future landers and rovers.

The Mars Reconnaissance Orbiter also carries a sounder to find subsurface water, an important consideration in selecting scientifically worthy landing sites for future exploration.

FMI: http://marsprogram.jpl.nasa.gov/mro/

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