http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?f5-subject%3DObservatory%20(space-based);f4-associated-Lesson%3DGamma%20Ray%20Impact Results for your query: f5-subject=Observatory (space-based);f4-associated-Lesson=Gamma Ray Impact Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/vela5b_5/vela5b_5.dc.xml The Vela satellites provided much information useful to astronomers studying gamma radiation from space. Other Vela satellites operated for approximately one year, but Vela 5b was in service for more a decade, from 1969 to 1979. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/vela5b_5/vela5b_5.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/compton_inSpace/compton_inSpace.dc.xml The Compton Gamma Ray Observatory was launched into orbit aboard the Space Shuttle Atlantis in April 1991. The photograph was taken by a member of the shuttle crew through a window on the Atlantis shuttle as the astronauts use the shuttle arm to release the observatory into orbit. The earth is visible in the background. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/compton_inSpace/compton_inSpace.dc.xml Mon, 01 Apr 1991 12:00:00 GMT