Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
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It takes eight and a half minutes for light to get from the sun to earth.
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In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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Jupiter's moon Ganymede, is larger than the planet Mercury!
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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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