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Published on Aug 25, 2010
Video Courtesy: NASA http://www.sofia.usra.edu NASA's SOFIA flying observatory recently completed the second series of envelope-expansion flight tests with its telescope door open. The SOFIA is now fully cleared for astronomy missions at altitudes up to 45,000 feet and telescope elevations up to 58 degrees. After installation and checkout of remaining systems, the airborne observatory will begin infrared astronomy missions late this year.