The universe is not only expanding but accelerating in its expansion, driven by a force called dark energy.
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There are more stars in the universe than grains of sand on Earth.
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There are rogue planets drifting through space with no star at all.
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The Milky Way and Andromeda galaxies are on a slow collision course.
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Black holes can slow time so much that seconds near them equal years far away.
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Neptune is known for its deep blue color.
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A day on Mercury lasts longer than a year on Mercury.
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The Moon slowly moves away from Earth by a few centimeters each year.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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