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Q12: Star A and star B both have
Q20: Contrast the space motion of neutron stars
Q23: Except for hydrogen and most of the
Q26: Distinguish an Sa from an Sc galaxy.
Q32: The form of electromagnetic radiation most effectively
Q49: Why is a variable star so convenient
Q59: Why does neutron capture work?<br>A)Neutrons have no
Q72: As a star begins to evolve away
Q88: The _ of light passing through thin
Q114: Besides direct formation of a black hole