An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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NASA invented baby food as we know it today.
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A comet's tail always points away from the sun.
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Pluto is smaller than Russia.
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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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