http://www.rssboard.org/rss-specification 720 XTF Search Results (expand=subject;f5-subject=Night Sky;f4-associated-Lesson=Gamma Ray Impact) http://ecuip-xtf.lib.uchicago.edu/xtf/search?expand%3Dsubject;f5-subject%3DNight%20Sky;f4-associated-Lesson%3DGamma%20Ray%20Impact Results for your query: expand=subject;f5-subject=Night Sky;f4-associated-Lesson=Gamma Ray Impact Thu, 01 Jan 1970 12:00:00 GMT Starry night at Yerkes. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/04.20.2012.S95YERKESpolarisstackedImage/04.20.2012.S95YERKESpolarisstackedImage.dc.xml Can you find the satellite in this time-lapse photo of the night sky over Yerkes Observatory in Williams Bay, Wisconsin? http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/04.20.2012.S95YERKESpolarisstackedImage/04.20.2012.S95YERKESpolarisstackedImage.dc.xml Fri, 20 Apr 2012 12:00:00 GMT