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BrandyBraden BrandyBraden
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A month ago

Approximately how many Earth-sized planets are believed to exist in the Milky Way Galaxy?



a few dozen



several thousand



several million



several billion

Textbook 
ASTRO

ASTRO


Edition: 3rd
Authors:
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tk9790tk9790
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A month ago
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BrandyBraden Author
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Just got PERFECT on my quiz
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this is exactly what I needed
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This site is awesome
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