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A supernova is the catastrophic death of a star, characterized by a massive output of energy. In the Milky Way, supernovae are relatively rare, with a few notable incidences of historical supernovae recorded as far back as 185 CE. Many previous supernovae were probably topics of conversation and concern among the people who witnessed them. Around the universe, several hundred are observed and recorded each year, providing information about the formation of the universe and the objects within it.

Astronomers study supernovae because they can provide valuable information about the universe. When stars explode, they initially form a cloud of plasma, creating a shock wave which leaves behind a distinct signature. The star also distributes heavy metals throughout the universe, and the large amount of energy behind a supernova can make it very easy to spot for an astronomer. By identifying and studying supernovae, astronomers can learn more about the size of the universe and the bodies in it. Supernovae created the materials which later came to become the Solar System, and a supernova will probably ultimately destroy our solar system as well.