What mechanism is responsible for creating and dispersing nearly all elements heavier than iron into the cosmos?

Answer

The Type II Supernova explosion

The catastrophic rebound explosion of the core of a massive star, known as a Type II Supernova, is responsible for creating and dispersing elements heavier than iron.

What mechanism is responsible for creating and dispersing nearly all elements heavier than iron into the cosmos?
astrophysicscelestial bodystar evolutionstellar massStar lifecycle