What is a supernova?
A supernova is a full-size explosion in which an complete superstar is destroyed. After the explosion, extraordinarily vivid mild is emitted for several days. Supernovas appear a billion times brighter than the Sun. Sometimes, a supernova explosion can go on for weeks or even months. Supernovas in most cases show up in distant galaxies. The remaining supernova to take place in the Milky Way came about in 1604. It was discovered by using the famous astronomer Johannes Kepler. The brightest supernova to be recorded so far is 1993J in the galaxy M81. It was seen on 26 March 1993. But because the stars are so some distance away, we may also see a supernova explosion long after it takes location
