/u/graaahh's posts
Watching Human Universe, Brian Cox said, "If you decreased the speed of light by just a few percent, our universe would have no carbon in it. Increase it by that same amount, and our universe would have no oxygen." Why would the speed of light even affect the elemental composition of the universe?
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If everything in space is constantly in motion at different speeds, how is it that we're able to measure the exact length of a year down to the second?
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If black holes have such great gravity, is the temperature at the center of a black hole at absolute zero, because the gravity is too great for the subatomic particles to move? If so, where does all that energy go?
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Assuming it was legal and money was no issue, how much of a person's body could theoretically be replaced by high-tech machinery with today's technology without them dying or being confined to one place?
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Why do so many animals from the sea have blue blood, but basically every animal on land has red blood?
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What would happen if all the energy of a nuclear bomb blast was contained to a 1-foot spherical area?
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