The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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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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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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Jupiter's moon Ganymede, is larger than the planet Mercury!
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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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The Earth gets heavier each day by tons, as meteoric dust settles on it.
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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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