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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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
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Earth is the only planet in our solar system that's not named after a god or goddess.
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There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
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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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