Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
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The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
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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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Lightning strikes about 6,000 times per minute on this planet!
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Jupiter is bigger than all the other planets combined.
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Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
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