Gas bubble chases around core of Milky Way

Astronomers have discovered a hot gas bubble rotating clockwise around the black hole Sagittarius A* – the core of our Galaxy. However, this bubble has not been found directly, but via an accompanying phenomenon: flares in the X-ray range, which have been detected again and again, starting from the black hole Sgr A*. Since nothing can leave the black hole itself, a phenomenon in the immediate vicinity must be responsible – the gas bubble.

“We suspect that we are dealing with a hot gas bubble or...