Fascinating discussion Michael -- I never thought about the amount of "stuff" in space increasing.
> As for seeing light... we can't, can we?
> I mean, we can see what light shines on but
> not actual light - not with our own eyes.
I think you've got this wrong . . .
What we see is the light that is reflected off of things. The reflecting item determines the color of the light, but light is the ONLY thing we see.
If this weren't true, wouldn't we be able to see objects even in the total absence of light?
Best,
Paul
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