Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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A comet's tail always points away from the sun.
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Summer on Uranus lasts for 21 years.
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Pluto is smaller than Russia.
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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