EVERYDAY SCIENCE

Detailed explanation-1: -A supernova (PL: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion.

Detailed explanation-2: -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.

Detailed explanation-3: -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.

Detailed explanation-4: -A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star. A supernova is the biggest explosion that humans have ever seen.

Detailed explanation-5: -This energy blows the outer layers of the star off into space in a giant explosion called a supernova (plural: supernovae.) The ball of neutrons left behind is called a neutron star and is incredibly dense.