Repeated radio signals detected for 2nd time from outside Milky Way

Scientists have reported the second-ever repeating radio wave signals coming from outside the Milky Way galaxy called fast radio bursts (FRBs). Canada-based CHIME telescope recorded 13 FRBs, including the repeating signal last summer. Of the over 60 FRBs detected to date, repeating bursts from a single source had been found only once before, by Puerto Rico-based Arecibo telescope in 2015.