The moon is actually moving away from Earth at a rate of 1.5 inches per year.
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The population of the Earth has more than doubled since 1950.
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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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It takes eight and a half minutes for light to get from the sun to earth.
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Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
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There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
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41% of the moon is not visible from earth at any time.
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Jupiter's moon Ganymede, is larger than the planet Mercury!
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