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Timeline of the Universe https://t.co/LCWgbNBz6f https://t.co/et8ZYoYlrh pic.twitter.com/7L4FemPvxb

— XKCD Comic (@xkcdComic) December 17, 2019

from Twitter https://twitter.com/xkcdComic

December 17, 2019 at 11:18AM
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