http://www.rssboard.org/rss-specification 720 XTF Search Results (docsPerPage=100;f66-subject=X-ray) http://ecuip-xtf.lib.uchicago.edu/xtf/search?docsPerPage%3D100;f66-subject%3DX-ray Results for your query: docsPerPage=100;f66-subject=X-ray Thu, 01 Jan 1970 12:00:00 GMT Lewin’s Discovery. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/SAS3-Rapid-Burster-GC/SAS3-Rapid-Burster-GC.dc.xml This image displays the light curve of the Rapid Burster discovered by Walter Lewin in data from SAS-3. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/SAS3-Rapid-Burster-GC/SAS3-Rapid-Burster-GC.dc.xml Thu, 01 Jan 1970 12:00:00 GMT