It's all chemistry. The color changes would indicate - as it heats up closing on the sun - what it's made of, like different materials in a Bunsen burner. We've had some interesting stuff coming thru. Indicative of cosmic debris(?) (cue Frank Zappa)

I'm a huge space junkie (hmm, good band name) so do enjoy latest theories.

I would think that the CBM would show a cold void. It is considered that a "dent" in the universe exists at the point where the Big Bang originated, disconnected from the multiverse, where the environment is dark. Hmmm...😎

So the entire local group as well? Maybe I've missed something but I understand that filaments (connections) extend throughout. Would that void be associated with dark matter?

Oh, did the Andromeda galaxy disappear?

If you start yanking on my little fleshy bit I'm gonna come out of the sand, too.

Tori sez, "Say, I've seen that kitty post somewhere before."