/r/askscience
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How can a star emit enough photons for its light to be seen in all directions billions of light years away?
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What is the farthest back you could go in human history, take a child, and raise it in the modern day world and have it be a normal human?
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Saturn has a storm in the shape of a hexagon at one of its poles. How can a storm be maintained in the shape of a hexagon?
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How do low frequencies in the electromagnetic spectrum penetrate objects, but "visible" light can't?
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