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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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
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The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
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NASA invented baby food as we know it today.
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Summer on Uranus lasts for 21 years.
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MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
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