http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?f5-subject%3DLaunch%20Vehicle;f6-subject%3DBalloon Results for your query: f5-subject=Launch Vehicle;f6-subject=Balloon Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GRIS_fall95/GRIS_fall95.dc.xml The balloon and GRIS payload head up to a float altitude of approximately 40 km. At float, the 39-million cubic foot balloon will expand to about the size of a football field. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GRIS_fall95/GRIS_fall95.dc.xml Thu, 01 Jan 1970 12:00:00 GMT