What is the duration of a supernova?

A supernova is the explosion of a star -- the largest explosion that takes place in space. A supernova is the explosion of a star -- the largest explosion that takes place in space. read more

If you're asking about the duration of the explosion of supernovae, then it's done within a few seconds (the number can still be less) - similar to a nuclear fission. read more

The supernova classification type is closely tied to the type of star at the time of the collapse. The occurrence of each type of supernova depends dramatically on the metallicity, and hence the age of the host galaxy. read more