There are cosmic distances.
Fact #2414
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The Earth orbits the Sun at about 30 kilometers per second.
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The light you see from some stars today began traveling before humans existed.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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Some stars appear to dim irregularly for reasons that are still studied.
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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 light you see from some stars today began traveling before humans existed.
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Black holes can slow time so much that seconds near them equal years far away.
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The Hubble Space Telescope has captured deep images of distant galaxies.
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