http://www.rssboard.org/rss-specification 720 http://ecuip-xtf.lib.uchicago.edu/xtf/search?expand%3Dtype;f5-subject%3DGamma%20Ray%20Burst;f4-associated-Lesson%3DGamma%20Ray%20Science;f6-type%3DArtwork Results for your query: expand=type;f5-subject=Gamma Ray Burst;f4-associated-Lesson=Gamma Ray Science;f6-type=Artwork Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/gamma-ray_bursts/gamma-ray_bursts.dc.xml This graphic illustrates the different sources and processes that result in long and short gamma-ray bursts. The left panel shows the collapse of a giant star that is thought to lead to a long GRB. The right panel shows the inspiral and coalescence of two neutron stars, which is thought to result in a short GRB. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/gamma-ray_bursts/gamma-ray_bursts.dc.xml Thu, 01 Jan 1970 12:00:00 GMT http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/165469main_403GRBCollapsarModelPar_NASAWebV_1/165469main_403GRBCollapsarModelPar_NASAWebV_1.dc.xml The collapsing star scenario that is one of the leading contenders as the cause of gamma-ray bursts. This artist's concept of the collapsar model shows the center of a dying star collapsing minutes before the star implodes and emits a gamma-ray burst that is seen across the universe. Many scientists say longer bursts (more than four seconds in duration) are caused by massive star explosions. http://ecuip-xtf.lib.uchicago.edu/xtf/view?docId=grxr/165469main_403GRBCollapsarModelPar_NASAWebV_1/165469main_403GRBCollapsarModelPar_NASAWebV_1.dc.xml Thu, 01 Jan 1970 12:00:00 GMT