/u/argonia's posts in /r/askscience
1713 upvotes
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How do we produce radio waves? Do we "make" them and use them, or do we harness the waves around us and use them for our own purposes?
942 upvotes
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32 upvotes
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24 upvotes
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Why is it that when you fold a piece of paper and then unfold it, it retains a crease at the place of the fold?
20 upvotes
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Has there been proven to be something in space that is the opposite of a black hole, something that won't let light in rather than out?
19 upvotes
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16 upvotes
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(Astronomy) When the Andromeda and the milky way collide and the super massive black holes meet, what will happen to the black holes?
14 upvotes
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12 upvotes
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