Understanding the Universe: An Introduction to Astronomy, 2nd Edition Season 1 Episode 79 The Paradox of the Dark Night Sky

October 19, 2023
31 min

Why is the sky dark at night? In an infinitely old and large Universe the sky should be ablaze with light at all times. There are several possible answers to this paradox, each of which has profound cosmological implications. The relative youth of the Universe is now known to be the main explanation.

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Understanding the Universe: An Introduction to Astronomy, 2nd Edition, Season 1 Episode 79, is available to watch and stream on The Great Courses. You can also buy, rent Understanding the Universe: An Introduction to Astronomy, 2nd Edition on demand at Apple TV Channels, Prime Video, Amazon, Hoopla online.