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Q3: What evidence do we have that the
Q16: If the theory that novae occur in
Q19: The separation of forces in the grand
Q24: The _ theory describes pulsars as rotating
Q27: After 3 half-lives, what percent of the
Q34: The Moon stopped evolving because it is
Q83: What is the difference between the proton-proton
Q92: Old stars are poor in heavy elements
Q106: What is the orientation of the galaxy
Q127: Stars with ˜0.4-4 solar masses swell into