Mercury has ice in permanently shadowed craters at its poles — despite being the closest planet to the Sun.
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The observable universe is about 93 billion light‑years wide.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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Space is completely silent.
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Space smells like burned metal.
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Time moves slower in stronger gravitational fields.
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Time moves slower in stronger gravitational fields.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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