Astronomers at MIT have discovered something they can't quite explain: A mysterious radio signal pulsing with constant regularity. They're called fast radio bursts, or FRBs, and were detected using a radio telescope in Canada called CHIME. Scientists say they usually only last a few milliseconds. But one new discovery is so powerful, it lasted a full three seconds. It also emitted radio waves in a series of peaks, like a heartbeat, and that's rare. Scientists think it is caused by a neutron star which rotates and emits radio waves from either end, similar to a lighthouse. “Previously, we were not able to see these neutron starts emitting radio waves from other galaxies because they are not energetic enough, they are not luminous enough. This is the first time where we may have detected a neutron star from so far away,” said MIT astronomer Dr. Daniele Michilli. This discovery could be used to help measure how fast the universe is expanding.
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