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SOFIA Telescope on X: "SOFIA's #telescope: 2.5 m. Kuiper Airborne Observatory, 1974: .9m; Lear Jet,1966: .3m http://t.co/RnqnpNK6pi #tbt http://t.co/lPIRUeB2Ob" / X
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NASA's costly SOFIA telescope has reached its end. But its legacy lives on - Interesting Engineering
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