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B1 中級 英語 3:54 Educational

Exoplanets 101 | National Geographic

National Geographic · 1,441,975 回視聴 · 追加日 3週間前

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(dramatic music)

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- [Narrator] They are nestled in the final frontier,

00:06

countless worlds, scattered throughout countless galaxies,

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challenged the notion that we are alone in the universe.

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Exoplanets are worlds that exist

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outside of our solar system.

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Also known as Extrasolar planets,

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these bodies often orbit their own stars,

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with some being a part of entire planetary systems.

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Exoplanets are made of the same elements

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as the world's and our solar system,

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and based on their composition and structures

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are just as diverse.

00:44

Some, known as giant or Neptune-like planets,

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