A mysterious “heartbeat” has been found in a galaxy a billion light-years from us, scientists say
Heart-shaped for the stars. My astronomy work. getty Astronomers have detected a radio signal from a distant galaxy that flashes for up to three seconds on a regular basis. More than a billion light-years away, the signal is called FRB 20191221A and is classified as a “radio burst”: a radio pulse. About 1,000 times longer …