Researchers at the University of Sydney believe they've identified one source of mysterious radio signals arriving from deep space. Using the Australian Square Kilometer Array Pathfinder radio telescope, the team traced the signal to a binary star system containing a white dwarf actively pulling material from a nearby red dwarf companion. The pair orbit each other in just over an hour, almost perfectly matching the timing of the radio bursts. Scientists say the system could serve as a Rosetta Stone for decoding other mysterious signals detected across the universe.