http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?expand%3Dspectral-Type;f1-spectral-Type%3DOptical;f2-type%3DCollage Results for your query: expand=spectral-Type;f1-spectral-Type=Optical;f2-type=Collage Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GPN-2000-000451/GPN-2000-000451.dc.xml Jupiter and its four planet-sized moons, called the Galilean satellites, were photographed in early March 1979 by Voyager 1 and assembled into this collage. Io is the moon in the upper left corner of the image, and is the moon that is closest to Jupiter. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GPN-2000-000451/GPN-2000-000451.dc.xml Thu, 01 Mar 1979 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/grb970228_hubble/grb970228_hubble.dc.xml It is difficult to determine the origin of a GRB, but sometimes it can be done. The visible light of this GRB was detected by ground-based telescopes, and once the light had faded a deep picture by the Hubble showed this GRB was located in a faint distant galaxy http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/grb970228_hubble/grb970228_hubble.dc.xml Fri, 05 Sep 1997 12:00:00 GMT