Science
What is the study of stars, planets and galaxies called?
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What spacecraft takes astronauts into space, orbits the Earth and can be flown more than once?
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What part of a plant obtains food and water from the soil and provides support?
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What is the substance that gives plants their green color?
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Who discovered the supernova and was the first to theorize that stars "die"?
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What is it called when the Earth, Sun and Moon lie in a straight-line configuration?
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Which of these objects is an example of a simple machine?
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Which of these was one of the original universal elements?
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