Spitzer telescope goes dark, leaving bright legacy

NASA sent its final command to the Spitzer Space Telescope today, ending more than 16 years spent studying alien planets, dusty nebulas and distant galaxies in infrared wavelengths.

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By Alan Boyle

Mastermind of Cosmic Log, contributing editor at GeekWire, author of "The Case for Pluto: How a Little Planet Made a Big Difference," president of the Council for the Advancement of Science Writing. Check out "About Alan Boyle" for more fun facts.

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