/u/JamesTheMannequin's posts in /r/askscience
It's generally understood that light travels at the speed of, well, light (in a vacuum). We know that it can be slowed through a denser medium (increasing refraction). Since "dark matter" is believed to make up a ton of space, is it possible that light could travel faster with dark matter removed?
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"Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying. " - Arthur C. Clarke There are two choices, but it's not 50/50. I know this but I don't know why. Can math explain?
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In a new study, astronauts have been seen losing many more red blood cells than normal under microgravity. Anemia is a big problem and we're rushing to solve it. But isn't the answer just "gravity"?
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