A NASA F/A-18 trails NASA's SOFIA 747SP during a test of the flying observatory's telescope cavity door opening mechanism.
ED09-0348-01
A NASA F/A-18 trails NASA’s SOFIA 747SP during a test of the flying observatory’s telescope cavity door opening mechanism. Test engineers opened the telescope cavity door to 10 percent of its maximum range, exposing the telescope to the airstream for the first time.December 14, 2009
NASA Photo / Carla Thomas