English

Authority Sources

http://id.loc.gov/vocabulary/iso639-2/eng

Chapter 17 Problems: Analyzing Starlight

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Chapter 18 Problems: The Stars

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Chapter 26 Problems: Galaxies

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Chapter 27 Problems: Active Galaxies, etc.

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Chapter 28 Problems: Evolution and Distribution of Galaxies

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Chapter 22 Problems: Stars From Adolescence to Old Age

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Chapter 23 Problems: The Death of Stars

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Chapter 13 Problems: Comets and Asteroids

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Chapter 14 Problems: Cosmic Samples

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Chapter 29 Problems: The Big Bang

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