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Crash Course Astronomy - Season 1 Episode 42 The Big Bang, Cosmology Part 1

Trailer
Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING! Knowing that the universe is expanding and how quickly its expanding also allows us to run the clock backwards 14 billion years to the way the universe began - with a bang.

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First Air Date: Jan 15, 2015

Last Air date: Dec 24, 2015

Season: 1 Season

Episode: 46 Episode

Runtime: 12 minutes

IMDb: 8.00/10 by 1.00 users

Popularity: 2.992

Language: English

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