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Q5: A star looks predominantly yellow to an
Q63: Which one of these bodies would NOT
Q81: What was the first extraterrestrial radio source
Q100: By what approximate factor, in scientific notation,
Q153: A beam of light of which of
Q155: When Mercury is at its farthest distance
Q218: Place these events in chronological order, from
Q239: Which of these descriptions characterizes the Newtonian
Q266: How does the angular resolution of the
Q329: At which point, as seen from Earth,