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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Jupiter's moon Ganymede, is larger than the planet Mercury!
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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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The earth is .02 degrees hotter during a full moon.
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If two pieces of metal touch in space, they become permanently stuck together.
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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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An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
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