Astronomers using the Australian SKA Pathfinder (ASKAP) telescope at CSIRO’s Murchison Radio-astronomy Observatory have tracked four mysterious blasts of cosmic radio waves back to their home galaxies; all four came from the outer regions of massive galaxies with moderate star-formation rates, ruling out central supermassive black holes and cosmic strings as a source. Host galaxies of FRBs localized by the ASKAP telescope, from left to right: FRB...
