There is enough gold in Earth's core to cover the entire surface of the planet in 1.5 feet of gold.
Fact #3830
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The Moon has no liquid water on its surface today.
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The light you see from some stars today began traveling before humans existed.
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The Kuiper Belt contains many icy bodies beyond Neptune.
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The event horizon marks the boundary around a black hole.
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Some stars collapse into black holes at the end of their life cycle.
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Black holes can slow time so much that seconds near them equal years far away.
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The observable universe is about 93 billion light‑years wide.
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The Milky Way is estimated to be over 100,000 light-years wide.
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