The asteroid belt was discovered one piece at a time — Ceres (1801) was the first, initially classified as a planet.
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The observable universe is about 93 billion light‑years wide.
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Jupiter is the largest planet in the solar system.
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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 Earth's rotation causes the Sun to appear to rise and set.
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Black holes can bend time.
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The Voyager probes have traveled beyond the heliosphere.
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Black holes can slow time so much that seconds near them equal years far away.
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The observable universe is about 93 billion light‑years wide.
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