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’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?