
Eerie echo detected coming from Milky Way’s supermassive black hole
The echo was emitted hundreds of years ago An eerie echo coming from the Milky Way’s supermassive black hole has been detected. It was emitted about 200 years ago when the dark abyss stirred from a state of dormancy, say scientists. The sound marks a very intense period of activity as gas and dust were […]
2 years ago

