NASA's MESSENGER probe, which has been circling Mercury since March 2011, is nearly out of fuel and will say goodbye with a dramatic death plunge on April 30, provided one final orbit-raising maneuver scheduled for April 24 goes as planned.
NASA's MESSENGER probe, which has been circling Mercury since March 2011, is nearly out of fuel and will say goodbye with a dramatic death plunge on April 30, provided one final orbit-raising maneuver scheduled for April 24 goes as planned.
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