A staccato blast of electromagnetic energy has been tracked to an old, dead galaxy for the first time. The discovery supports the idea that there are more ways to produce such flares, called fast radio bursts, than originally thought.
Fast radio bursts, or FRBs, are millisecond-long eruptions of intense radio waves. Astronomers have observed thousands of these blasts, but only about 100 have been traced back to their origins, says astronomer Tarraneh Eftekhari of Northwestern University in Evanston, Ill. Almost all of them came from lively neighborhoods full of young stars.
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