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January 4, 2013
NASA's SOFIA observatory with a NASA F/A-18 trailing in chase soars over California City in the desert north of Edwards Air Force Base, Calif., on its last envelope-expansion test flight Aug. 4, 2010. The SOFIA's 2.5-meter infrared telescope and its associated telescope cavity doors are rotated open to their maximum 58-degree position in this view. August 4, 2010 (NASA photo / Carla Thomas)

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