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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Only 55% of Americans know that the sun is a star.
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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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In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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It takes eight and a half minutes for light to get from the sun to earth.
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Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
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Venus is the only planet that rotates clockwise.
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