The moon is actually moving away from Earth at a rate of 1.5 inches per year.
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Jupiter's moon Ganymede, is larger than the planet Mercury!
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The earth travels through space at 660,000 miles per hour.
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The Earth gets heavier each day by tons, as meteoric dust settles on it.
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The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
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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Some asteroids have other asteroids orbiting them.
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