NASA has traced some mysterious radio signals being picked up on Earth to the "strongest magnets in the universe".The US space agency said the bursts of radiation were produced by very strong fields in five distant galaxies.The "fast radio bursts" (FRB) were said to generate as much energy in a 1/1000th of a second as the sun does in a year.Experts estimated the magnets were 10 trillion times more powerful than ones found on refrigerator doors.Astronomers have traced them back to "young magnetar outbursts" located in the outer spirals of galaxies.It comes after the Hubble Space telescope found signs of such a star in a region of our Milky Way last year.Magnetars are a type of neutron star which have been dubbed the strongest magnets in the.
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