The Milky Way is estimated to be over 100,000 light-years wide.
Fact #177
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Neptune is the farthest known major planet from the Sun.
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Cosmic microwave background radiation is evidence of the early universe.
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The universe is expanding faster.
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The observable universe is about 93 billion light‑years wide.
Fact #1841 · Space
The observable universe is about 93 billion light‑years wide.
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The center of the Milky Way contains a supermassive black hole.
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The Earth's atmosphere is layered into troposphere, stratosphere, and beyond.
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The Moon has no breathable atmosphere.
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