Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
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The earth travels through space at 660,000 miles per hour.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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The population of the Earth has more than doubled since 1950.
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The earth is .02 degrees hotter during a full moon.
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The temperature of the earth's interior increases by 1 degree every 60 feet down.
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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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