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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They are not bright enough, they are too far away, there are brighter stars, or something else in the way.
Most stars are just not in the milkyway, making them impossible to see with the naked eye.
For a star to be visible, it needs to had a brightness of 6ish magnitude, moon is -13 and sun is -27.
There are hundreds of billions of stars in our galaxy…
But less then 10000 are visible to us with the naked eye.
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