http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?expand%3Dsubject;f1-subject%3DObservatory%20(space-based);f2-subject%3DVoyager%201 Results for your query: expand=subject;f1-subject=Observatory (space-based);f2-subject=Voyager 1 Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/voyager1/voyager1.dc.xml Voyager 1 and 2 were launched 16 days apart in 1977 to study Jupiter and Saturn. In September 2013, NASA reported that Voyager 1 had entered interstellar space, placing it more than 11 billion miles from the Sun and making it the most distant human-made object. As of 2013, Voyager 2 is in the heliosheath, the outermost layer of the immense magnetic bubble, called the heliosphere, that contains our solar system. Both Voyager 1 and 2 are still sending scientific information about their surroundings through the Deep Space Network (DSN). http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/voyager1/voyager1.dc.xml Thu, 01 Jan 1970 12:00:00 GMT