Olbers′ Paradox

If the Universe is infinite, uniform, and unchanging then the entire sky at night would be bright, about as bright as the Sun.

The further you looked out into space, the more stars there would be, and thus in any direction in which you looked your line-of-sight would eventually impinge upon a star.

This is resolved by the big bang theory where the Universe is non-uniform, dynamic, and finite.


See also: Big Bang Theory, Universe.

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Subjects: Astronomy