NPR News: Scientists To Bid A Bittersweet Farewell To Rosetta, The Comet Chaser

Scientists To Bid A Bittersweet Farewell To Rosetta, The Comet Chaser
To cap its 12-year scientific voyage, the Rosetta spacecraft will take a final plunge Friday. Scientists will signal Rosetta to crash into the surface of a comet — and gather data all the way down.

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