In the last 7 years, humanity has discovered 43 potentially habitable planets.
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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
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Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
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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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If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
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If two pieces of metal touch in space, they become permanently stuck together.
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Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
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