The Earth: Crash Course Astronomy #11

Phil starts the planet-by-planet tour of the solar system right here at home, Earth.

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Life in the Universe: Crash Course Astronomy #46

Phil gives the course a send off with a look at some of his favorite topics.

Deep Time: Crash Course Astronomy #45

Our Universe’s days are numbered.

A Brief History of the Universe: Crash Course Astronomy #44

Thanks to the wonders of physics, we can map a timeline of the universe’s history.

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