Supernovas are one of the most fascinating astronomical phenomena that occur in the universe. A supernova is an explosion that occurs when a star has reached the end of its life and has run out of the fuel that keeps it shining. Some possible synonyms for the word supernova include "stellar explosion," "nova," "type Ia supernova," and "core-collapse supernova." These terms are used interchangeably to describe the many types of supernovas that occur in the universe. Each type of supernova has its unique characteristics, and scientists study them to gain a better understanding of the universe's evolution and the structure of the galaxy.