The Kepler Space Telescope found that 22% of sun-like stars have an Earth-size planet in the habitable zone.
Fact #7502
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The Earth's rotation is gradually slowing over time.
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The Sun accounts for more than 99% of the mass of our solar system.
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The Earth's atmosphere gradually thins into outer space.
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There are rogue planets drifting through space with no star at all.
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The event horizon marks the boundary around a black hole.
Fact #1616 · Space
There are rogue planets drifting through space with no star at all.
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The light you see from some stars today began traveling before humans existed.
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The light you see from some stars today began traveling before humans existed.
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