Like supernovae, quasars must end with a violent explosion.
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Q31: Our theories of galaxy formation are just
Q32: Most galaxies are isolated in space.
Q33: There is presently no evidence for large-
Q34: The Milky Way is at the center
Q35: Galactic evolution is due to collisions between
Q37: The more its central black hole was
Q38: Supermassive galaxies are found at the core
Q39: Mergers between equally massive galaxies usually produce
Q40: In its early stages, the Milky Way
Q41: Rotation curves for spiral galaxies show
A) most
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