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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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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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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NASA invented baby food as we know it today.
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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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