What is the term used for a bright and strong explosion that happens during a huge star's last evolutionary phase?

A supernova is a very bright and energetic star explosion, a brief astronomical phenomenon that happens during a star's last evolutionary phases, or when a white dwarf undergoes uncontrolled nuclear fusion. The term "supernova" was coined by Walter Baade and Fritz Zwicky in 1929.

Asked by Vasilii Kulev · Last updated 4 years ago · 4.7K views · SOURCE