At 6:30 a.m. (EST) today NASA’s Mercury-bound MESSENGER spacecraft successfully fired its large bipropellant thruster for the first time since launch, completing the first of several critical deep ...
MESSENGER marked its 52nd day of flight operations with a burst from its thrusters, completing a maneuver on Sept. 24 that kept it on course for next summer’s Earth flyby. Carried out mostly by ...
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