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Q75: Which force induces the core to contract
Q89: Which component in the core of a
Q147: The "helium flash" occurs in a 2-solar-mass
Q161: The Schwarzschild radius is:<br>A) half the diameter
Q188: The spiral galaxy in which we live
Q202: Seyfert galaxies are:<br>A) active galaxies with bright,
Q322: A white dwarf is about the same
Q353: Quasars have now been detected in which
Q392: The typical timescale for variability of a
Q436: The luminosity of the Milky Way Galaxy