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Q3: Which component of the Milky Way is
Q17: Imagine that an astronomer in an alternate
Q23: Which of Jupiter's Galilean moons contains a
Q27: The Magellanic Stream is evidence of:<br>A) a
Q28: If Io's orbit moved outward,it would:<br>A) experience
Q38: A set of stars all initially have
Q52: A "super-Earth" has a radius 1.4 times
Q53: An astronomer observes many galaxies in distant
Q55: What fraction of Earth's life has the
Q66: Why are the jets from radio galaxies