The light hitting the earth right now is 30 thousand years old.
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In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
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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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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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Summer on Uranus lasts for 21 years.
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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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