Science
Which Pioneer spacecraft first visited the planet Saturn?
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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 university did astronomy and space science theorist Carl Sagan teach at?
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Which scientist died the same year Sir Isaac Newton was born?
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When a dog repeats a learned behavior and gets a reward, what process is shown?
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A covering of ice crystals on the ground is known as what?
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Which scientific term is defined as the rate at which a wave oscillates in cycles?
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