# Astronomers Built Decades of Exoplanet Models on a Simplified Assumption. JWST Just Found the Gap. - Date: 2026-04-26 - Category: Space & Aerospace The Astrophysical Journal Letters just confirmed what planetary atmosphere models have been missing for decades: water-ice clouds on a world 12 light-years away. The physics was too hard to calculate, so the field set it aside. Now they have the answer. ---