Gamma-ray burst: the mystery deepens. (NASA's Gamma Ray Observatory detected gamma ray burst that may have lasted as long as 90 minutes) (Brief Article)

From: Science News | Date: December 17, 1994| Author: | Copyright information

Some call it the greatest fireworks show never seen. Nearly once a day, a burst of gamma rays explodes somewhere in the universe, emitting high-energy photons and then disappearing - usually within seconds. The short duration of the bursts has made studying this phenomenon extremely difficult.

Last February, however, NASA's Compton Gamma Ray Observatory (GRO) spotted a gamma-ray burst that appeared to last 90 minutes. Because Earth slid in front of the orbiting GRO's view, the craft detected only the opening and the finale of the light show, leading astronomers to infer that ...

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