Mars Odyssey was designed to investigate the Martian environment, providing key information on its surface and the radiation hazards future explorers might face. The goal was to map the chemical and mineralogical makeup of Mars as a step to detecting evidence of past or present water and volcanic activity on Mars. The spacecraft also was designed to act as a relay for future landers and did so for the Mars Exploration Rovers (Spirit and Opportunity), the Mars Science Laboratory, and the Phoenix lander.Still in orbit around Mars, 2001 Mars Odyssey holds the record for the longest continually active spacecraft in orbit around a planet other than Earth.
urn:nasa:pds:context:investigation:mission.2001_mars_odyssey
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