Mysterious Radio Signals from Deep Outer Space! | Fast Radio Bursts (FRB’s) | Kosmoz

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Mysterious Radio Signals from Deep Outer Space! | Fast Radio Bursts (FRB’s) | Kosmoz

Of all the things leaving astronomers scratching their heads, fast radio bursts (FRBs) are particularly vexing. As their name suggests, they are sudden, rapid chirps of radio waves, often lasting mere milliseconds.

The first one was picked up by our radio telescopes in 2007, and we’ve been scrambling to try and explain them ever since.

These FRBs appear to be coming from outside the Milky Way, often hundreds of millions of light-years away.

To be seen from such a distance, they must release as much energy in a fraction of a second as the Sun does in 80 years. Explanations range from colliding black holes to signals from extraterrestrial civilizations.

Yet before astronomers had managed to figure them out, the Universe threw us another curveball. A burst known as FRB 121102, emanating from a small galaxy three billion light-years away, was seen to repeat.

On just one day in August 2017 it repeated a staggering 93 times, ruling out a single event as its cause – whatever triggered the burst had to be ongoing.

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