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Neil deGrasse Tyson @neiltyson
From an earlier tweet… “To be scientifically literate is to empower yourself….” Weekly image & link to a T-shirt. Conceived & designed by fans. Approved by me. After fees to the artist, proceeds go to educational organizations. https://t.co/6ihjONkS40 https://t.co/p0stNYWkp4 — PolitiTweet.org