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SPACE: What Are Fast Radio Bursts, And What Causes Them?

Mysterious ultra-fast pinpricks of radio energy keep lighting up the night sky and nobody knows why. A newly discovered example of this transient phenomenon has been traced to its place of origin — a nearby spiral galaxy — but it’s only made things murkier for astronomers.

The problem concerns a class of blink-and-you’ll-miss-them heavenly events known as fast radio bursts (FRBs). In a few thousandths of a second, these explosions produce as much energy as the sun does in nearly a century. Researchers have only known about FRBs since 2007, and they still don’t have a compelling explanation regarding their sources.

“The big question is what can produce an FRB,” Kenzie Nimmo, a doctoral student at the University of Amsterdam in the Netherlands, said during a news briefing on Monday (Jan. 6) here at the 235th meeting of the American Astronomical Society in Honolulu, Hawaii.

Scientists were given some help in 2016, when they discovered an FRB that repeated its quick-pulsing radio tune in random bursts. All previous examples had been one-off events.

Full Story From Live Science 

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