Mercury Voyager

NASA’s MESSENGER (Mercury Surface, Space Environment, Geochemistry, and Ranging) vehicle made a close pass by the innermost planet today, executing a gravitational “slingshot” maneuver in preparation for an orbital insertion on on March 18, 2011, after which it will settle in for some long-term observations. As it passed by, it photographed parts of the planet that have never been seen before.

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