Fair, but the article implied that it's a somewhat linear effect- you don't need absolute zero for it to make the cloud dim. The article didn't do a great job of saying what temps they were testing at.
Still, I'm not surprised. I doubt some armchair scientist is going to solve the riddle of dark matter. I was curious and got some good answers. Thanks!
That was fun to read. Even funner to realize that the huge relative number is actually more useful too. Saying 2.72 degrees sounds small, but a difference that large on average throughout the universe would be absolutely insane And break basically all of physics
The temperature variance across the CMB is incredibly small. It depends on what you mean by uniformly spread, of course, but the fancy colorful images you often see are showing variance out to like 4 or 5 decimal places, if I recall. Like thousandths or ten-thousandths of a degree K.
