http://www.rssboard.org/rss-specification 720 XTF Search Results (f1-associated-Lesson=Gamma Ray Tools;f2-spectral-Type=Gamma ray) http://ecuip-xtf.lib.uchicago.edu/xtf/search?f1-associated-Lesson%3DGamma%20Ray%20Tools;f2-spectral-Type%3DGamma%20ray Results for your query: f1-associated-Lesson=Gamma Ray Tools;f2-spectral-Type=Gamma ray Thu, 01 Jan 1970 12:00:00 GMT GRB 090423. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GRB090423/GRB090423.dc.xml One for the record books, gamma-ray burst 090423 was detected April 23, 2009, by the Swift Gamma-Ray Burst Explorer mission. The image is a composite of data from UVOT and XRT. The image is fuzzy because XRT does not have high enough resolution to produce sharp images. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/GRB090423/GRB090423.dc.xml Thu, 23 Apr 2009 12:00:00 GMT