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Last updated on May 25, 2013 at 17:29 EDT
SOFIA
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SOFIA

January 4, 2013
The Stratospheric Observatory for Infrared Astronomy's 747SP sits on an aircraft ramp during nighttime testing and operation of the SOFIA's German-built telescope assembly. The aircraft is based at NASA's Dryden Aircraft Operations Facility in Palmdale, Calif. September 24, 2009 NASA Photo / Tom Tschida