The largest volcano in the solar system, Olympus Mons on Mars, is 600 km wide at its base.
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Saturn's rings are made primarily of ice particles and rocky debris.
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Rogue planets drift through space without orbiting a star.
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Neutron stars are among the densest objects in the universe.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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Mercury has extreme temperature differences.
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The International Space Station is one of the most complex engineering projects ever built.
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Black holes can bend light through gravitational lensing.
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Black holes can slow time so much that seconds near them equal years far away.
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