In the last 7 years, humanity has discovered 43 potentially habitable planets.
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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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The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
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Astronauts get taller when they are in space.
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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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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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The heart of an astronaut actually gets smaller when in outer space.
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The population of the Earth has more than doubled since 1950.
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