Mathematics – Logic
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.2802p&link_type=abstract
American Astronomical Society, DPS meeting #39, #28.02; Bulletin of the American Astronomical Society, Vol. 39, p.465
Mathematics
Logic
Scientific paper
Europa is the astrobiological archetype for icy satellite habitability, with a warm, salty, water ocean with plausible chemical energy sources. It is also a geophysical wonderland of interrelated ice shell processes that are intimately related to the ocean and tides, and of complex interactions among its interior, surface, atmosphere, and particles and fields environments. The Europa Explorer is a mature orbiter mission concept to explore Europa and investigate its habitability, fulfilling objectives laid out by the National Research Council's Planetary Science Decadal Survey. The mission examines Europa's ocean, ice shell, chemistry, geology, external environment (fields, particles, and atmosphere), and neighborhood (the Jupiter system). Science questions for Europa are well-honed, yet we anticipate being surprised by discoveries. Europa Explorer would nominally launch in June 2015, on a Venus-Earth-Earth Gravity Assist trajectory with a 6 year flight time to the Jupiter system. It would orbit Jupiter for 2 years using gravity assists of the icy Galilean satellites to lower its energy, providing the opportunity for significant Jupiter system science. It would then enter Europa orbit at an altitude of 100-200 km, where it would perform science investigations for 1 year. A campaign-based operations scenario has been developed which permits return of 5.4 Tbits of science data beginning in July 2021, and emphasizing the highest priority Europa science objectives early in the orbital phase of the mission. The baseline mission concept includes 11 instruments that address high-priority investigations while providing the flexibility to respond to discoveries. The radiation design approach has been independently reviewed and validated, and a statistical lifetime prediction method has been developed. Past technology investments have reduced mission risk, making the Europa Explorer mission ready to move forward in order to address the high-priority astrobiological and geophysical objectives outlined by the Decadal Survey.
Abelson R.
Bills Bruce
Blankenship Donald D.
Clark Kate
Greeley Ronald
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