The search for alien life has always been hampered by the huge racket that Earth generates, rendering it difficult to tease out alien signals from all the local noise.
But a new method for recognizing radio signals traveling through interstellar space could narrow the search considerably.
“I think it’s one of the biggest advances in radio SETI in a long time,” says astrophysicist Andrew Siemion, a co-author of a paper describing the technique and director of the Berkeley Search for Extraterrestrial Intelligence (SETI) Research Center.
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