Olbers's paradox is solved in part by the fact that the universe is neither infinitely large nor infinitely old.

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Olbers's paradox, which questions why the night sky is dark if the universe is infinite and filled with stars, is resolved by understanding that the universe is not infinitely old, meaning not all light has had time to reach us, and it is expanding, which stretches the wavelengths of light, reducing their energy as they travel through space.

Olbers's Paradox Is Solved in Part by the Fact That