Artificial intelligence discovers dozens of mysterious cosmic signals

One of astronomy's controversial mysteries is now being investigated by artificial intelligence. A team of researchers at Breakthrough Listen, a Search for Extraterrestrial Intelligence (SETI) project spearheaded by the University of California, Berkeley, have developed a machine learning algorithm to sift through cosmic data and identify fast radio bursts, strange and energetic pulses thought to emanate from far-off galaxies. No one knows for sure what causes these radio emissions but theories abound -- from highly magnetized neutron stars battling black holes to signs of alien life. In a recent study, the SETI researchers used a customized A.I. system to discover dozens of previously unidentified fast radio bursts from a source some 3 billion light-years away. The fast radio bursts were picked out from a data set that had already been analyzed by astronomers.