The Natal Registry · Science & Tech
Jules Bordetborn under Mercury retrograde
Belgian immunologist and microbiologist (1870-1961) — born June 13, 1870, while Mercury traced its backward loop through Gemini.
BornJune 13, 1870(1870–1961)♊︎☿ Rx in Gemini · 9°58′Rx windowMay 23 – Jun 16, 1870
✶Astrological tradition — for entertainment, not astronomy
Tradition reads a natal Mercury retrograde as the inward mind — drafted, revised, doubled back — and gives it a air-sign keynote in Gemini: Your ruler stumbles; messages misfire most of all.
Shares a retrograde sign with
Born inside the very same window
Coincidence, not causation: the birthday and the window are real and ephemeris-based; the reading is tradition, offered in good fun.