http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?f4-type%3DArtwork;f5-subject%3DObservatory%20(space-based);f6-subject%3DHubble%20Space%20Telescope Results for your query: f4-type=Artwork;f5-subject=Observatory (space-based);f6-subject=Hubble Space Telescope 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