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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The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
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The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
In outer space there exists a gigantic cloud of alcohol which can be used to produce 400 trillion trillion pints of beer.
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