NASAs Fermi Swift See Shockingly Bright Burst
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NASA's Fermi, Swift See 'Shockingly Bright' Burst

May 7, 2013
Swift's X-Ray Telescope took this 0.1-second exposure of GRB 130427A at 3:50 a.m. EDT on April 27, just moments after Swift and Fermi triggered on the outburst. The image is 6.5 arcminutes across. Credit: NASA/Swift/Stefan Immler

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