with how light works and the constant expansion of what we term the “observable universe” why don’t we constantly see new stars appearing in the night sky as the observable part expands and stars/galaxies light reaches us for the first time?
The night sky has stayed relatively the same (accounting for changing postions over time, stella phenom, supernovas etc.) for all of humans written history.
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2 things. The stars are so far away that you can’t see them with the naked eye and when you use a telescope you can see many more but still in the dark they are just too far to be able to see. But light still gets to us from really far away.
Second, there is a theory that the universe is expanding exponentially faster, so quickly on the edges of space that it is expanding faster than light in fact. For this reason the sky is not filled with light. Imagine chasing a bike while running 10 mph. But the bike is going 11 mph. You will never catch it and it will keep getting further. Away
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