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New Horizons Is Now So Far Away, It Can Measure The True Darkness of Space.
(www.sciencealert.com)
this post was submitted on 17 Aug 2023
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I’m guessing that because there are always some amount of stars visible, the number would have to be above zero, but maybe as you get a certain distance away from closer stars, the darkness kind of “evens out”?
Well now you've got me wondering... how long after the heat-death of the universe before all of the traveling photons have been extinguished? How old will the universe be before it truly goes dark?
I was also wondering about near black holes. If even light can't escape, is there basically pure total darkness beyond the event horizon?
maybe. no one knows. just because light cannot escape does not mean it does not exist inside. and even if it exists inside everything could be so distorted it might not be visible. maybe light is only visible from further out to inside, ie if you were in the middle of falling into a black hole youd see matter that has just fallen in but nothing from before you fell in. or maybe the opposite.