Mercury As Seen From An Orbiting Satellite

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This is the first image of Mercury as seen from the orbiting MESSENGER probe. MESSENGER stands for Mercury Surface Space Environment Geochemistry and Ranging. This probe’s mission is to study the chemical composition, geochemistry and the magnetic field of Mercury. It has already surprised scientists with its discovery of water H2O in the exosphere of Mercury. The exosphere is the layer of atmosphere 600 km. from the surface.

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