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July 5, 1687: When Newton explained why you don't float away


On this day in 1687, Isaac Newton published the Principia—a book that explained why apples fall, why planets don’t wander off, and why NASA is still lighting enormous tubes on fire to fling humans into orbit 337 years later.

And then on July 5, 1687, Isaac Newton published a book with a title so long it felt like a Latin riddle: Philosophiæ Naturalis Principia Mathematica. In the 337 years since, Newton’s ideas have been used for all sorts of fussy yet vital activities: building bridges that don’t collapse, plotting planetary orbits, and explaining why toast inevitably lands butter-side down. Tune into The Multiverse Employee Handbook —the only podcast that treats Newtonian physics like a bureaucratic policy memo with optional tea breaks.

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