/u/PUMPKIN_IN_MY_POOPER's posts in /r/askscience
If you used an engine which was powered by the radioactive decay of a gallon of water, how much energy would it produce in 10 billion years?
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If Santa has some of the milk and cookies each child leaves for him on Christmas, how many calories does he consume? What else could be done with that sort of energy?
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Comets heat and cool as they approach and leave the sun. For those which circle the sun on a quasi stable orbit, does the tail get reabsorbed by the main rocky part of the comet as it cools, or is it swept away by solar winds?
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Cross-disciplinary question: What is a theory in your field of expertise, which there is not yet sufficient evidence to establish, yet which you suspect is true and is interesting?
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How fast do gravity / gravity waves move? Is there any way they can theoretically move faster than light?
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Is it possible to cram 20,000 calories into a normal sized, normal weight energy bar which is at room temperature?
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