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Q19: When the Sun generates its own energy,
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Q23: Which publication was Kepler's masterpiece, providing strong
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Q31: Most individual star names come from Latin
Q32: In the materials subsection of an APA-style
Q35: What process do scientists use to determine
Q59: Explain why Copernicus' hypothesis, where the Sun
Q68: What is released from the proton-proton chain
Q74: The velocity required to escape an astronomical