space.com
Uranus has a weird magnetic field that’s stumped scientists for 40 years — we may finally know why
A new U.S. and U.K. study using computer simulations and Voyager 2 data explains the odd magnetic fields of Uranus and Neptune. The research shows that extreme internal pressures and temperatures ionize water and other volatiles, increasing electrical conductivity and producing highly tilted, off‑center magnetic fields. Simulations reproduce the 59‑degree offset on Uranus and the 47‑degree offset on Neptune, and predict that their field orientations can shift by tens of degrees over decades. The findings clarify the dynamo [...]