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Which of the following statements about gamma ray bursts is not true?The events responsible for gamma ray bursts apparently produce only gamma rays, and no other light that we can hope to detect.Many gamma ray bursts are associated with supernovas in distant galaxies.Gamma ray bursts are among the most luminous events that ever occur in the universe.Gamma ray bursts were originally discovered by satellites designed to look for signs of nuclear bomb tests on Earth.
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