How do streetlights make it harder for us to see the stars in the night sky?
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If you look at an eye when strong light suddenly goes into it, will you see the hole in the middle get smaller, this does it to reduce the amount of light that goes into it. Now if it is dark does the hole get as big it can to gather every bit of light.
Now imagine it’s dark, and you light a candle, it will light up the surroundings and appears bright, if you now turn on a flashlight directly toward your face, will you now only be able to see the flashlight and the candle will be nearly totally dark, this is because you hole in the eye has gotten small again to keep out the excessive amount of light.
The result is that the candle’s light is nowhere near enough to be seen by you. The same is it with the stars, the tiny point of light, compared to the bright light from a light pole, makes your eyes get small holes and keep out too much light.
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