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 last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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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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It 'snows' metal on Venus.
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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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