Why is space so dark even though the universe is filled with stars?

"You might guess it’s because a lot of the stars in the universe are very far away from Earth. Of course, it is true that the farther away a star is, the less bright it looks – a star 10 times farther away looks 100 times dimmer. But it turns out this isn’t the whole answer."

https://theconversation.com/why-is-space-so-dark-even-though-the-universe-is-filled-with-stars-205810



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