Only 55% of Americans know that the sun is a star.
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More than 20 million meteoroids enter Earth's atmosphere every day.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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Buzz Aldrin’s mother’s maiden name was Moon.
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Lightning strikes about 6,000 times per minute on this planet!
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The moon is actually moving away from Earth at a rate of 1.5 inches per year.
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