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Neil deGrasse Tyson @neiltyson
How did it all begin? How will it all end? What’s it all made of? Are we alone in the Universe? Do we live in a simulation? Do Parallel Universes exist? What is our place in the Universe? https://t.co/S18uIRwISF https://t.co/ZyuIjOWuxv — PolitiTweet.org