.A number of evolutionary roads can lead to a supernova blast. One is the fatality of a supermassive star. When a supermassive superstar runs out of its hydrogen energy, it starts a phase where it integrates the remaining components to heavier as well as larger ones. These last fusion responses produce less and much less exterior force (radiation stress) to balance the celebrity's gravitational pull incoming. As heavier components create in the star's core, the core itself begins to completely fall down under its own gravitation, as well as the superstar's outer levels blast away in a supernova explosion. Depending on the star's initial mass, its center might fall down to only neutrons, leaving behind a neutron celebrity, or even its gravitational force might be therefore fantastic that it falls down to a black hole.