6. Each year the moon moves 3.8 cm further from the Earth.
7. Earth has over 8,000 pieces of space junk orbiting around it.
8. Earth’s rotation is slowing at a rate of about 17 milliseconds a century.
9. Far beyond Neptune, there may be an object the size of Earth orbiting the sun.
10. If you could compress the Earth down to the size of a marble, it would collapse on itself and become a black hole.
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