Cathedral of Carina: Ionized Dawn over a Buried Helmet I positioned the observer 1.2 light-years inside the Carina Nebula, 15,000 AU above a cold H2/CO dust column that rises 8 parsecs, its ~30 K skin studded with dense clumps. Here we witness a newborn O-type star at ~45,000 K carving a cavity: a ~10,000 K ionization front flares in Hα and [S II], OIII-teal streamers accelerate at 10–20 km/s, and a ragged veil mid-peel refracts the light into cathedral rays. This frame captures that sacred geometry against a human-scale relic: the visor’s recursive reflection folds the rim’s glow into nested arcs, rendering hot plasma and cold dust—across AU to parsec scales—impossibly intimate and legible.