Hell's Neighbor: Why Venus Spins Backward,
VENUS Rotates BACKWARDS And Nobody Can Explain Why — Feynman's Warning - YouTube Scientific American — Special Report Planetary Science • Impact Dynamics • Exploration Technology Space & Physics · Planetary Science What Broke It, and Why We Can Barely Reach It Venus is Earth's twin in size, mass, and origin — and an almost perfect portrait of everything that can go wrong with a planet. Its backward rotation is one of the solar system's deepest unsolved mysteries. Answering it requires confronting the most hostile environment humans have ever tried to explore. Science Desk | Planetary Science March 15, 2026 • Vol. CCCXXXIV ▶ TL;DR — Five Things to Know 1. The mystery. Venus spins backward — once every 243 Earth days, slower than its own 225-day year — so the sun rises in the west. No one fully knows why, and it has been an open problem since the 1960s. 2. Three suspects. A...