Last updated on April 18, 2014 at 21:21 EDT
122 of 203


January 4, 2013
The Stratospheric Observatory for Infrared Astronomy science team completed checkout of optical star tracking camera systems and conducted telescope assembly preparation exercises during nighttime testing on the ramp at the Dryden Aircraft Operations Facility in Palmdale, Calif. September 24, 2009 NASA Photo / Tom Tschida