Led by The University of Texas at Austin, an international team simulated the complex interactions among circulating fluids, shifting temperatures, and magnetic forces inside Uranus and Neptune. These simulations revealed that internal fluids become increasingly conductive with depth as water molecules break into electrically charged ions under crushing pressures. Unlike Earth's relatively modest 11-degree tilt, the models successfully reproduced Uranus's 59-degree tilt and Neptune's 47-degree tilt. The team also determined that the magnetic poles on both ice giants are highly unstable and can shift rapidly over time.
Key points
The newly developed simulations successfully recreate the unusual magnetic field readings…: The newly developed simulations successfully recreate the unusual magnetic field readings originally gathered by NASA's Voyager 2 during the 1980s.
Interior fluids on Uranus and Neptune gain electrical conductivity as depth increases due…: Interior fluids on Uranus and Neptune gain electrical conductivity as depth increases due to the ionization of water molecules under high pressure.
The magnetic poles of these distant planets are unstable and could shift by tens of degre…: The magnetic poles of these distant planets are unstable and could shift by tens of degrees within just a few decades.
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- Date:
- November 15, 2026
- Source:
- UT Jackson School of Geosciences
- Summary:
- The strange, wildly tilted magnetic fields of Uranus and Neptune have puzzled scientists since NASA's Voyager 2 spacecraft explored the planets in the 1980s. New simulations suggest that extreme conditions deep inside these icy giants create unusual electrical properties that could explain their magnetic fields. Remarkably, the models indicate that their magnetic poles could shift by tens of degrees within just a few decades, far faster than Earth's.
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When NASA's Voyager 2 spacecraft visited Uranus and Neptune in the 1980s, it discovered something extraordinary. Unlike Earth, which has a relatively orderly magnetic field with clearly defined north and south poles, both distant planets possess strangely distorted and dramatically tilted magnetic fields. For decades, scientists have struggled to explain why.
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