They don’t have bedroom black ... dark dots. But when the researchers spotlighted the frogs with an ultraviolet flashlight, the animals glowed blue-green. The intensity of the glow was ...

So white spots on a black background look bigger than same-sized black spots on white background, and Galileo's glowing stellar objects are not really as big as they might appear to the unaided eye.

The resulting pictures reveal more plasma surrounding the black hole, in the form of a larger, fluffier ring. The astronomers could also spot plasma trailing up and out from the central glowing ring.