X-ray “light echoes” hint at outburst from Milky Way’s central black hole - Ars Technica
arstechnica.comSubmitted by arstechnica3419 in science
The supermassive black hole at the center of our galaxy hasn't always been quiet.
Submitted by arstechnica3419 in science
The supermassive black hole at the center of our galaxy hasn't always been quiet.