Water production on exoplanets revealed by pressure experiments

Los Angeles CA (SPX) Nov 20, 2025

Researchers led by Lawrence Livermore National Laboratory postdoctoral scientist Harrison Horn have demonstrated a pathway for producing water on sub-Neptune exoplanets. The team recreated the boundary conditions between hydrogen atmospheres and magma cores using a laser-heated diamond-anvil cell.

Horn stated, "Our experiments are the first to look at interactions between hydrogen and sili