The first exoplanet orbiting a sun-like star was confirmed in 1995; we've since discovered over 5,000 confirmed exoplanets.
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Space is completely silent.
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Dark energy is thought to drive the accelerating expansion of the universe.
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The Earth's magnetic field protects against solar radiation.
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The observable universe is about 93 billion light‑years wide.
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The light you see from some stars today began traveling before humans existed.
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The Earth's magnetic field helps prevent atmospheric loss.
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The Milky Way is estimated to contain hundreds of billions of stars.
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The Earth's gravity affects the movement of tides.
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