If two pieces of metal touch in space, they become permanently stuck together.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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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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Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
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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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There are more nerve cells in the human brain than there are stars in the Milky Way.
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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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