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Due to increasing amounts of terrestrial radio noise, in the future SETI telescopes may be placed
Q2: The point directly over your head is
Q5: For water to have been stable on
Q22: Suppose we imagine the Sun to be
Q26: From the fact that virtually every galaxy
Q31: If our year were twice as long
Q34: In the novel Contact by Carl Sagan,
Q52: Due to its elliptical orbit, Mars is
Q54: In the Hertzprung-Russell diagram most stars are
Q66: Most of the key energy-generating chemical reactions
Q100: Which of the following extrasolar planets would