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My Answered Questions
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Are we alone in the universe?
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If heat is just the proximity and interaction of particles, why can a lack of heat or too much heat be harmful to us?
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If we left earth today, could we escape the eventual collision between the Milkyway and andromeda?
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If heat flows into colder areas, how can I feel the cold coming out of a Coke can?
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What will kill the human race?
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Why do we say there are such things as gravitons, even though we can’t observe them and we guess their properties?
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What is meant by electromagnetic radiation? How can light be a form of radiation?
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Is the universe still expanding?
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How will the universe end?