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 Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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Astronauts get taller when they are in space.
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It takes eight and a half minutes for light to get from the sun to earth.
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If two pieces of metal touch in space, they become permanently stuck together.
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