Astronomers may now fully understand why the sky is dark at night
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Each time we gaze up at the night sky, we take for granted that it's a pitch-black void studded with twinkling stars.
This is called Olbers' Paradox, and though the idea was posed in the 1500s, it still remains somewhat controversial.
It asks the question: If the universe is essentially infinite and ageless, why don't we see a uniform field of stars — and a blindingly bright sky instead of a dark one?
Modern explanations suggest the universe is finite, has an age... Читать дальше...