Mysterious flashing seen near supermassive black hole. Astronomers have an idea what it is

A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could they be?

​ A black hole infamous for strange features has once again baffled astronomers, this time with rapid X-ray flashes. What could they be? USA TODAY – Breaking News and Latest News Today Read More