Void in center
You hear about one thing and that's all you see anymore...
What sort of event other then a black hole would cause a void of darkness in the center like that? I'm addicted to searching these for strange occurences.
by ElisabethB moderator
This is just an optical artifact caused by the brightness of the core. Sorry !
And besides that you can't directly observe one (only their interaction with other bodies or light) aren't they way too small to be seen in such an image?