There are stars that end their existence with a large massive cosmic explosion, known as supernova. When exploding, supernovae throw material into space at a speed of between 15,000 and 40,000 kilometers per second. These explosions are responsible for the production of a large part of the material of the Universe, such as iron, which is part of our planet and of ourselves.
It is curious to think that heavy elements only occur in supernovae, so, after all, we all carry in our bodies remaining this type of explosions that occur in the Universe.
Supernovae are adding elements to the dust and gas clouds in space, promoting interstellar diversity. They also produce shock waves that condense gas clouds, favoring the formation of new stars.
But there are very few stars that end up becoming supernovae. Most are cooling and end their life as white dwarfs, to later become black dwarfs.
After the explosion, a supernova can continue to illuminate the sky for several weeks. The transfer of material and energy will result in a very different star. It is a neutron star, a reminder of the previous existence of a supernova. These neutron stars emit radio waves constantly or in intermittent bursts.