NASA’s Messenger spacecraft swung into position around Mercury last night, making it the first spacecraft ever to orbit the innermost planet.

Engineers at the Johns Hopkins University Applied Physics Laboratory in Maryland, 96 million miles from Mercury, received the signal confirming that Messenger (MErcury Surface, Space ENvironment, GEochemistry and Ranging) had completed its final maneuver at 9:10pm EDT.

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Spacecraft swings into first orbit around Mercury