Some astronauts grow up to 2 inches taller while in space due to spinal expansion.
Fact #2496
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The Moon was likely formed after a massive collision with early Earth.
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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 International Space Station orbits Earth roughly every 90 minutes.
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The observable universe is about 93 billion light‑years wide.
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Some stars collapse into black holes at the end of their life cycle.
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The Moon is slowly moving away from Earth.
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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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