The James Webb Space Telescope has peered into a previously unseen world: the atmosphere of the giant planet WD 1856 b, orbiting a white dwarf. The transit spectrum from 0.5 to 5.0 μm revealed hydrocarbons, including methane with a significance of 17:1 to 30:1, thick aerosols, and thermal glow from
arXiv:2607.01316v1 · 2026-07-01