Did you know?
Earth's average orbital speed is about 30 kilometers per second. In other units, that's about 19 miles per second, or 67 000 miles per hour, or 110 000 kilometers per hour.
Earth's average orbital speed is about 30 kilometers per second. In other units, that's about 19 miles per second, or 67 000 miles per hour, or 110 000 kilometers per hour.
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Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.
Oscar Wilde