Interior profiles of the kinetic energy (yellow line), the internal energy plus the gravitational energy (purple line), and the total energy (dashed light blue line) at various times during the explosion for a non-rotating stellar progenitor with M_ZAMS = 25 M_⊙ with metallicity [Fe/H] = −2. The shaded purple area in the panels represents the region of the star forming the compact remnant at each time. It is completely formed at t = 3 × 10⁴ s.