Then the Devil has one huge shitter: XKCD diagrammed the
scale
From the photo you can tell it's spinning -
Here's a vid on how you can tell that.
And yes, it's a radio telescope array that imaged this - more info from another Veritassium vid
here, including how it's spinning, how we saw the image etc.
Today's theme:
Muse, Supermassive Black Hole (Crank the bass!)