There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
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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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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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Mars had an oxygen-rich atmosphere around 4 billion years ago
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Pluto is smaller than Russia.
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