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If we are optimistic in our assumptions about the development of life and intelligence, thenthe number of technological civilizations in the galaxy should equal the:
Q4: The center of the Milky Way lies
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Q26: Distinguish an Sa from an Sc galaxy.
Q29: What is true of spiral galaxies?<br>A)They are
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Q41: If the presently accepted value of
Q54: The best answer to both the flatness
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Q70: Which statement about the Local Group is
Q80: The period from about one to 100