MESSENGER Poised for Mercury Orbit Insertion

After more than a dozen laps through the inner solar system, NASA's MESSENGER spacecraft will move into orbit around Mercury on March 17, 2011. The durable spacecraft--carrying seven science instruments and fortified against the blistering environs near the sun--will be the first to orbit the innermost planet.

At 8:45 p.m. EDT, MESSENGER--having pointed its largest thruster very close to the direction of travel--will fire that thruster for nearly 14 minutes, with other thrusters firing for an [...]

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