Astronomers observe a strange burst of energy.
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Astronomers have observed a previously unrecognized type of long-lasting gamma ray burst (GRB), according to Andrew Levan, an astronomer at the University of Warwick, in Coventry, England.
Three such bursts have been discovered between 2010 and 2012, and one of these, GRB 111209A, is of particular interest to scientists.Â Astronomers say the gamma ray burst in question is the longest ever observed, with a duration of approximately 25,000 seconds, or about 7 hours.