English: (a) Star has onion-layered shells of elements, electron neutrinos are created leading to neutronization of the iron core. (b) When gravitational pressure exceeds the electron degeneracy pressure, in-fall of material begins, neutrinos became trapped inside the core. (c) Repulsive nuclear forces generate an outward-propagating shock wave (red) in the outer core, triggering the supernova explosion, release of trapped neutrinos as a burst. (d) The shock begins to stall as the neutrino burst and iron photo-disintegration drains its energy away. (e) Neutrino heating energize the shock wave, the stalled shock wave is rejuvenated when thermal pressure increases above the pressure of the infalling material (black) (f) The material outside the inner core is ejected, leaving behind only a degenerate remnant.