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Q17: High-mass stars evolve differently than medium-mass stars
Q23: _ is the largest of the five
Q37: Which statement best describes the surface of
Q40: A neutron star is created when a(n)
Q41: Spiral arms are obvious-easily-seen features-because they contain
Q42: Which object would be absent in the
Q49: Most of the energy emitted by a
Q58: Neptune's magnetic field is likely generated by
Q61: Because the Moon has a low average
Q68: How have scientists been able to determine