The International Space Station orbits Earth every 90 minutes.
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Neutron stars can spin hundreds of times per second.
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Saturn's largest moon is Titan.
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Neutron stars are among the densest objects in the universe.
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The observable universe is about 93 billion light‑years wide.
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Cosmic microwave background radiation is evidence of the early 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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The heliosphere protects the solar system from interstellar radiation.
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Black holes can slow time so much that seconds near them equal years far away.
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