I'm sure in the last ten minutes you've already seen this very cool image of Messier 87:
But what am I looking at here?
In particular, is there a reason why it looks dark in the middle? Are we perpendicular to the accretion disc? Does this mean we're perpendicular to the plane of this galaxy? Is this matter behind the black hole which is being lensed?
What else can I learn by staring at this image?