The first image of the environment around a black hole. As a matter of fact, it's not all dark.

Remarks
In a media conference Avery Broderick of the Perimeter Institute described what the images tell us. 1 key finding is that the object is really a black hole because we have understood holes using. It does not have any visible surface, and the”shadow” of light it creates is circular within the limits of the observations. We could even tell that it spins clockwise. All are consistent with relativity. “I was somewhat stunned that it matched the predictions we made well,” said Broderick.

Enlarge / the very first picture of the surroundings around a black hole. As a matter of fact, it’s not all dark. (credit: National Science Foundation)