Mars Odyssey

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A NASA Mars orbiter, launched in 2001 April. It went into polar orbit around Mars in 2001 October, using aerobraking to circularize the orbit. The craft carried three main instruments: a Thermal Emission Imaging System (THEMIS) to map the surface mineralogy; a Gamma Ray Spectrometer (GRS) to analyse the surface chemistry; and the Mars Radiation Environment Experiment (MARIE) to assess the radiation risk to future human explorers.

http://mars.jpl.nasa.gov/odyssey/ Official mission website.

Subjects: Astronomy and Astrophysics.

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