Messenger mission will send a spacecraft to study the least explored
terrestrial planet. The spacecraft will orbit the planet after two
flyby. The key science quetions to be addressed include trying to
udnerstand the origin of Mercury's high density, to understand
the composition and structure of the crust, its tectonic history,
volcanism, atmosphere and magnetosphere.
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Karen. Meech, Institute for Astronomy, UH email@example.com