GENERAL KNOWLEDGE

Detailed explanation-1: -A supernova is the colossal explosion of a star. Scientists have identified several types of supernova. One type, called a “core-collapse” supernova, occurs in the last stage in the life of massive stars that are at least eight times larger than our Sun. As these stars burn the fuel in their cores, they produce heat.

Detailed explanation-2: -This energy blows the outer layers of the star off into space in a giant explosion called a supernova (plural: supernovae.)

Detailed explanation-3: -Learn more about what happens when stars explode. Some stars burn out instead of fading. These stars end their evolutions in massive cosmic explosions known as supernovae. When supernovae explode, they jettison matter into space at some 9, 000 to 25, 000 miles (15, 000 to 40, 000 kilometers) per second.