The Milky Way is moving through space at over a million miles per hour.
Fact #2637
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The Sun will eventually expand into a red giant.
Fact #111 · Space
The Bell Labs experiment led to the discovery of the cosmic microwave background.
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The Moon has no liquid water on its surface today.
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The Mars Pathfinder mission tested new landing techniques.
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The light you see from some stars today began traveling before humans existed.
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There are black holes at galaxy centers.
Fact #1714 · Space
The Earth's atmosphere protects life by filtering harmful radiation.
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Some exoplanets orbit two stars at once.
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