Science
What was so unusual about the Mercury space flights?
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What is the female reproductive cell of flowering plants?
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About how long does it take for sunlight to reach the Earth from the Sun?
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What is magma, which has surfaced through a volcanic eruption?
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What is a spacecraft that orbits planets, moons or other large space objects called?
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Which one of the original 7 astronauts sported the middle name of Herschel?
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Dolly was the first ever living creature to be cloned. What type of animal was she?
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Which state saw the first self-sustaining nuclear chain reaction in 1942?
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