Stock Photo - The crew of the Space Shuttle Atlantis gives the all´s well thumb´s_up sign after leaving the 100_ton orbiter following their landing at 6:55 a.m. PDT, 11 April 1991, at NASA´s Ames Dryden Flight Research Facility later redesignated Dryden Flight Research Center, Edwards, California, to conclude mission STS_37. They are, from left, Kenneth D. Cameron, pilot, Steven R. Nagel, mission commander, and mission specialists Linda M. Godwin, Jerry L. Ross, and Jay Apt. During the mission,which began with launch April 5 at Kennedy Space Center, Florida, the crew deployed the Gamma Ray Observatory. Ross and Jay also carried out two spacewalks, one to deploy an antenna on the Gamma Ray Observatory and the other to test equipment and mobility techniques for the construction of the future Space Station. The planned five_day mission was extended one day because of high winds at Edwards.