The Earth has at least two quasi-satellites — asteroids that orbit the Sun in sync with Earth.
Fact #6731
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Black holes can slow time so much that seconds near them equal years far away.
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The Sun accounts for more than 99% of the mass of our solar system.
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Neptune is the farthest known major planet from the Sun.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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A day on Mars is slightly longer than a day on Earth.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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The Moon has no atmosphere like Earth's.
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The Fermi Paradox questions why extraterrestrial life has not been observed.
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