Science
What is the speed of the solar system around the center of the galaxy?
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What is the world's largest non-profit, scientific and educational organization?
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Who was the last person to set foot on the moon in 1972?
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What is matter that doesn't allow light to pass through called?
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Which aeronautical term is a moveable surface on an aircraft which controls its motion?
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What is a process used by plants to convert light energy into chemical energy?
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Which term describes flying at six times the speed of sound?
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What is the 6th planet from the sun in our solar system?
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