Type II supernova

A Type II supernova is a powerful explosion that occurs at the end of a massive star's life cycle. When a star, significantly heavier than our Sun, runs out of nuclear fuel, its core collapses under gravity, causing a rebound effect that ejects its outer layers into space. This explosion can briefly outshine entire galaxies and disperses heavy elements into the universe, which can contribute to the formation of new stars and planets. Type II supernovae are characterized by their hydrogen-rich spectrum, which helps astronomers identify them in the night sky.