Mysterious radio signal traced to dwarf galaxy 3 billion light-years away
A mysterious signal that has confounded scientists for years has been traced to a spot in the sky more than 3 billion light-years away. Almost a decade after the first fast radio burst (FRB) was discovered, an international team of researchers has pinpointed the origin of one such signal as a dwarf galaxy in the pentagon-shaped constellation Auriga. Scientists originally thought the signal -- sporadic bursts of radio waves -- was coming from within the Milky Way itself, or from our closest galactic neighbors, but a new report in the journal Nature confirms it emanates from a tiny galaxy 1% the mass of our own. "These radio flashes must have enormous amounts of energy to be visible from over 3 billion light-years away," Cornell University researcher Shami Chatterjee said in a statement. Ultra-rare galaxy could be 'one of a kind' Visible-light image of the dwarf galaxy from which signal FRB121102 is emanating. Distant signals Fast radio bursts were first discover...
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