Exoplanets have been discovered in habitable zones around distant stars.
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The observable universe is about 93 billion light‑years wide.
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Neutron stars can spin hundreds of times per second.
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Space smells like burned metal.
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Black holes can slow time so much that seconds near them equal years far away.
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Saturn has dozens of known moons.
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The International Space Station travels at about 28,000 kilometers per hour.
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The Earth's axis is tilted about 23.5 degrees.
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The universe is expanding faster.
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