NASA's SOFIA flying observatory undergoes nighttime characterization testing of its infrared telescope at the Dryden Aircraft Operations Facility in Palmdale, Calif., in March 2008.
ED08-0067-31March 10, 2008
NASA’s SOFIA flying observatory undergoes nighttime characterization testing of its infrared telescope at the Dryden Aircraft Operations Facility in Palmdale, Calif., in March 2008.
NASA photo by Tom Tschida