Raymond Pierrehumbert is a planetary-atmosphere theorist and Halley Professor of Physics at the University of Oxford. He co-authored the 2026 l-98-59-d magma-ocean study (src-l-98-59-d-sulphur-magma-world-2026-05) led by harrison-nicholls. Pierrehumbert framed the work as a demonstration that coupled atmosphere–interior modelling can reconstruct the deep history of planets humans will never visit, from mass, radius, and atmospheric data alone.