Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
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Some asteroids have other asteroids orbiting them.
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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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Only 55% of Americans know that the sun is a star.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
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