Carnegie Scientists Predict New Carbon Hydride State Above 1,100 GPa Inside Ice Giants
Updated
Updated · The Brighter Side of News · May 19
Carnegie Scientists Predict New Carbon Hydride State Above 1,100 GPa Inside Ice Giants
1 articles · Updated · The Brighter Side of News · May 19
Carnegie Science simulations identified a quasi-one-dimensional superionic carbon-hydride phase that could exist deep inside Uranus, Neptune and some exoplanets.
At pressures above 1,100 gigapascals and temperatures of roughly 4,000 to 6,000 Kelvin, carbon formed a helical crystal framework while hydrogen moved mainly along spiral pathways.
That directional motion makes the material highly anisotropic, with much stronger heat and electrical transport along the hydrogen channels than across them.
The result could refine models of how ice giants redistribute energy and generate their unusually tilted, irregular magnetic fields, though it does not directly solve that puzzle.
Researchers used machine-learning-assisted quantum simulations and found the phase remained stable in models of up to 1,500 atoms, pointing to possible relevance for larger exoplanets and advanced materials research.
If AI can discover new states of matter inside planets, what else can it find?
Could a bizarre 'crystal staircase' inside Neptune finally solve its greatest magnetic mystery?
Can we build new technologies from this strange matter that is both solid and liquid?
Discovery of a Quasi-1D Superionic State in Carbon Hydride: Implications for Uranus, Neptune, and Extreme Planetary Interiors
Overview
In April 2026, scientists predicted a novel quasi-one-dimensional superionic state by exploring carbon-hydrogen systems under extreme terapascal pressures. This unique state features hydrogen atoms that move freely along a helical axis and rotate in the perpendicular plane, thanks to a special carbon hydride compound with a helical crystal structure. The intricate coupling of these atomic motions bridges the gap between superionic and plastic states of matter. Formed under conditions similar to those deep inside gas giants, this discovery has major implications for understanding how heat and electricity move through the interiors of planets like Uranus and Neptune.