http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?expand%3Dsubject;f1-subject%3DObservatory%20(space-based);f2-associated-Lesson%3DX-ray%20Impact Results for your query: expand=subject;f1-subject=Observatory (space-based);f2-associated-Lesson=X-ray Impact Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/Chandra/Chandra.dc.xml Named in honor of the Nobel-prize winning Indian-American astrophysicist Subrahmanyan Chandrasekhar, the Chandra X-ray Observatory is the world’s most powerful X-ray telescope. It has eight-times greater resolution and can detect sources more than 20-times fainter than any previous X-ray telescope. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/Chandra/Chandra.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/heao2_prepflight/heao2_prepflight.dc.xml Einstein Observatory (HEAO-2) was the first fully imaging X-ray telescope put into space and the second of NASA's three High Energy Astrophysical Observatories. Named HEAO-B before launch, the observatory's name was changed to honor Albert Einstein upon its successfully attaining orbit. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/heao2_prepflight/heao2_prepflight.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/hubble/hubble.dc.xml Named after astronomer Edwin Hubble, one of the Hubble Space Telescope’s key projects was to determine the rate of expansion of the Universe, called the Hubble Constant. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/hubble/hubble.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/uhuruExplode-72bigfromChandrasite/uhuruExplode-72bigfromChandrasite.dc.xml The Uhuru X-ray satellite, equipped with a relatively simple instrument - a sensitive X-ray detector similar to a Geiger counter attached to a viewing pipe to locate the source - made some astounding discoveries. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/uhuruExplode-72bigfromChandrasite/uhuruExplode-72bigfromChandrasite.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/484px-X-Ray_Explorer_Satellite_wikipedia/484px-X-Ray_Explorer_Satellite_wikipedia.dc.xml Marjorie Townsend and a colleague with the Uhuru satellite. Dr. Townsend, who was the Project Manager of the Small Astronomy Satellite Program, named the satellite Uhuru, which means freedom in Swahili. Uhuru would go on to detect evidence of black holes, neutron stars, and vast expanses of hot gas in systems containing thousands of galaxies. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/484px-X-Ray_Explorer_Satellite_wikipedia/484px-X-Ray_Explorer_Satellite_wikipedia.dc.xml Wed, 02 Dec 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GiacconiUhuruSatellite1970/GiacconiUhuruSatellite1970.dc.xml Riccardo Giacconi stands with the Uhuru satellite, circa 1970. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GiacconiUhuruSatellite1970/GiacconiUhuruSatellite1970.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/uhuruLaunch-72/uhuruLaunch-72.dc.xml Awaiting launch from the San Marco Platform in Kenya, Uhuru was the first satellite specifically for the purpose of X-ray astronomy. It was also known as the X-ray Explorer Satellite SAS-A, for Small Astronomy Satellite A, being first of the three-spacecraft SAS series. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/uhuruLaunch-72/uhuruLaunch-72.dc.xml Thu, 01 Jan 1970 12:00:00 GMT