In April this year, a weaker burst was detected and astronomers tracked it to a unique kind of star called a magnetar some 30,000 light-years away from us.
Astronomers currently have as many as fifty different theories for what causes these fast radio bursts, aliens among them.
Radio bursts are t mystery, they pulse brightly in radio waves for just a few milliseconds before fading away and are rarely seen again.
The FRB in question reports like clockwork, in one of the most definitive patterns seen from a source of these flashes.
Two independent groups have localized flashes of these millisecond-long bursts from Milky Way-esque galaxies.
These things come to us from halfway across the universe & we know so little about them: Researcher.
Breakthrough Listen detects 15 radio bursts from a distant galaxy while searching for alien civilisations
If the source is actually an intelligent alien race, then the FRBs could be used to power a small interstellar spacecraft with solar sails.
An FRB is a transient radio pulse that flashes for only a few milliseconds at a time and occurs outside the Milky Way.
Analysing over 650 hours of archival data, a team of astronomers has for the first time uncovered "Fast Radio Burst" from outer space.