A day on Mercury lasts longer than a year on Mercury.
Fact #102
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The light you see from some stars today began traveling before humans existed.
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The Moon completes an orbit around Earth in about 27 days.
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Venus has surface temperatures hot enough to melt lead.
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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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Neptune has some of the fastest winds in the solar system.
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The Hubble Space Telescope revolutionized deep-space imaging.
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The Earth's rotation causes day and night cycles.
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