/u/SenorPuff's posts in /r/askscience
If black is the best absorber of light and white is the worst/most reflective, why are mirrors silvery/grey?
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Why are far away galaxies redshifted, when they aren't actually traveling away from us, there's just more space there than there was before? Does light lose energy traveling through a vacuum?
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Why do prion diseases pop up more when eating the CNS of your own species? How do they start? And why don't they happen nearly as often without that precursor?
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