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Q32: All planets revolve around the Sun counterclockwise,
Q48: If a star rises about 9 PM
Q51: In noting that our world is "differentiated,"
Q62: What celestial line is a product of
Q64: A college researcher claims that the
Q77: If intending to teach his students the
Q87: Why must radio dishes be built so
Q88: According to the photoelectric effect, in order
Q94: Above about 100 km, the high-energy portion
Q105: What event triggered the dramatic increase in