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ssi15 ssi15
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A month ago

As a star exhausts the hydrogen in its core, what happens to its outer layer?



It compresses and heats up.



It compresses and cools down.



It expands and heats up.



It expands and cools down.

Textbook 
ASTRO

ASTRO


Edition: 3rd
Authors:
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varelaj326varelaj326
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A month ago
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ssi15 Author
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This helped my grade so much Perfect
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