NASA / SWIFT / STEFAN IMMLER / SCIENCE PHOTO LIBRARY NASA / SWIFT / STEFAN IMMLER / SCIENCE PHOTO LIBRARY
Gamma ray burst (GRB) 110328A, Swift image. GRBs are extremely high-energy events that occur when a star is torn apart by powerful jets that form as it collapses. These events occur rapidly, but the afterglow can be recorded by sensors on orbiting satellites. GRB 110328A was detected on 28 March 2011 and flared several times over the following days. This image was obtained by NASA's Swift X-ray satellite the same day, and combines data from ultraviolet and optical (white and purple) and X-ray telescopes (yellow and red). GRB 110328A is 3.8 billion light years from Earth, in the constellation of Draco.
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