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Before Messenger crashes on Mercury, NASA bids spacecraft farewell
Before Messenger crashes on Mercury, NASA bids spacecraft farewell

NASA’s Messenger spacecraft is about to end its mission with a bang. After spending more than four years and 4,100 orbits circling the closest planet to the sun, the satellite will crash into Mercury’s crater-pocked surface April 30. NASA officials and mission scientists have given tribute to the Messenger spacecraft, which was the first to orbit Mercury and which they say has fundamentally altered our understanding of this scorched little world.   "We study Mercury because it's part of our history. It's part of who we are and where we come from," science team member Thomas Zurbuchen of the University of Michigan in Ann Arbor said in a statement....

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