Science
In which constellation was the first double star observed?
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The term, "black hole", was named by American physicist, John Wheeler, in which year?
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Where is the world’s most active volcano located?
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About how long does it take for sunlight to reach the Earth from the Sun?
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Which of these is a term for slowly falling precipitation?
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Which Apollo mission was launched on December 21, 1968, and spent Christmas in lunar orbit?
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Which is the organelle involved with waste removal?
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