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Swift, U.S. satellite observatory designed to swing into the proper orientation to catch the first few seconds of gamma-ray bursts. It was launched on November 20, 2004. Swift had a gamma-ray telescope that makes the first detection of a gamma-ray burst. The spacecraft was moved so that the gamma-ray burst could be observed by an X-ray telescope and an ultraviolet-optical telescope. Sixty seconds after the first gamma rays are observed, the X-ray telescope produced a...