There are more galaxies in the observable universe than grains of sand on all of Earth's beaches.
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Venus has the longest day of any planet in the solar system.
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The light you see from some stars today began traveling before humans existed.
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The Moon is slowly moving away from Earth.
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The Milky Way is estimated to be over 100,000 light-years wide.
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The Hubble Space Telescope revolutionized deep-space imaging.
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The Earth's magnetic field shields the planet from solar wind.
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Comets are made of ice, dust, and rocky material.
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Light from distant galaxies shows us the past.
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