A core-collapse supernova on an endless loop: a quiet progenitor star implodes, a soft shock-breakout bloom launches an expanding spherical front of ejecta, and radial Rayleigh–Taylor filaments — tinted [O III] teal and Hα red — stream outward as the fireball cools white to deep red. The afterglow fades to a compact central remnant, then the star reforms and it repeats. Point to aim the blast asymmetry; press to re-detonate.