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Crash Course Astronomy

1 Season
46 Episode

Crash Course Astronomy - Season 1 Episode 21 Comets


(1 votes, average: 8.00/ 10)

12 minutes 2024 HD

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Today on Crash Course Astronomy, Phil explains comets. Comets are chunks of ice and rock that orbit the Sun. When they get near the Sun the ice turns into gas, forming the long tail, and also releases dust that forms a different tail. We’ve visited comets up close and found them to be lumpy, with vents in the surface that release the gas as ice sublimates. Eons ago, comets (and asteroids) may have brought a lot of water to Earth -- as well as the ingredients for life.

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Season 1

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