Space is completely silent — there is no medium to carry sound waves.
Fact #3299
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Saturn's rings are made primarily of ice particles and rocky debris.
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The observable universe is about 93 billion light‑years wide.
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The Earth's magnetic field helps prevent atmospheric loss.
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The light you see from some stars today began traveling before humans existed.
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Black holes can slow time so much that seconds near them equal years far away.
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Mercury is the closest planet to the Sun.
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The Earth is not perfectly round.
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Neutron stars can spin hundreds of times per second.
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