The International Space Station is the most expensive structure ever built, costing over $150 billion.
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Fast radio bursts are powerful millisecond-long radio pulses from distant galaxies.
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The observable universe is about 93 billion light‑years wide.
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The Sun will eventually expand into a red giant.
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There are planets made of diamond.
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Exoplanets have been discovered in habitable zones around distant stars.
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The light you see from some stars today began traveling before humans existed.
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The International Space Station orbits Earth every 90 minutes.
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Cosmic microwave background radiation is evidence of the early universe.
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