The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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The population of the Earth has more than doubled since 1950.
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Venus is the only planet that rotates clockwise.
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The earth rotates more slowly on its axis in March than in September.
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It takes eight and a half minutes for light to get from the sun to earth.
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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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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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The moon is actually moving away from Earth at a rate of 1.5 inches per year.
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