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Astronomy’s Unsung Hero is a Plain Ol’ Aluminum Ball

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In 1965, MIT's Lincoln Laboratory saw their Lincoln Calibration Sphere 1 (LCS-1) launched into Earth orbit. It was an empty aluminum sphere and couldn't do any science of its own. But the world's most boring disco ball has played a huge support role in astronomy, earth science, and engineering for over half a century!

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Science
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