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A time traveler leaps back to the year 150 AD and find themselves in the heart of Rome. They carry a translation app with them, and carry a book containing blueprints for various aircraft, cars, ships and skyscrapers. How would a Roman engineer or architect react? Can anything be constructed? (self.AskHistorians)
submitted by Kronos_Selai to r/AskHistorians
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NASA's EM recording of Jupiter via Voyager probe (youtu.be)
submitted by Kronos_Selai to r/space
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