INTERMARSNET: A Joint ESA/NASA Mission to Mars in 2003

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Atmospheres, Exploration, Mars: Interior, Network, Surfaces

Scientific paper

INTERMARSNET is a joint ESA/NASA network and orbital mission to investigate the interior, surface and atmosphere of Mars. The INTERMARSNET mission consists of three landers to be placed on the surface of Mars and a data-relay spacecraft in Mars orbit. The small landers will define a regional/global network of stations to carry out simultaneous geophysical and meteorological measurements and to investigate the local geology and geochemistry of the landing sites during the operational lifetime of the stations on Mars of one martian year (687 days). Two stations will be landed in the Tharsis region, which is the most likely area to still show tectonic activity, and the third station at the antipode in the eastern hemisphere to gather information about the martian core. The objectives of the landers are the following: internal structure and activity; geodesy and rotational dynamics; surface geology and morphology; mineralogy and geochemistry of rocks, soils and volatiles; atmospheric structure, global circulation and meteorology. The objectives of the orbiter will emphasize investigations directly complementing the network science (atmospheric sounding) and data still missing from the martian surface (roughness). The INTERMARSNET mission is a joint ESA/NASA contribution to the international exploration of Mars. It represents the only network mission in the International Mars Exploration Working Group (IMEWG) scenario. In the current mission baseline, ESA would provide a data-relay orbiter and an Ariane-5 dedicated launcher, while NASA would contribute three free-flyer type probe/landers in the framework of the Mars Surveyor exploration program.

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