Because they are massive explosions that can outshine a whole galaxy.
well what you gotta do is go home a smoke weed
Iron is the heaviest element formed by fusion in the core of a supergiant star prior to its supernova explosion. Elements heavier than iron are typically formed during the supernova explosion itself through nucleosynthesis processes.
Our Sun is not massive enough to end in a supernova explosion. When it nears the end of its life, it will shed its outer layers as a planetary nebula and eventually collapse into a white dwarf. Supernova explosions typically occur in massive stars that have exhausted their nuclear fuel and undergo a catastrophic collapse.
Nebula. Some nebulae are formed as the result of supernova explosions. The material thrown off from the supernova explosion is ionized by the supernova remnant. One of the best examples of this is the Crab Nebula, in Taurus. It is the result of a recorded supernova, SN 1054, in the year 1054 and at the centre of the nebula is a neutron star, created during the explosion.
A supernova, or in the case of a smaller star, a nova.
A supernova. See related question.
It is yes
A supernova is when a massive star explodes. A neutron star is what can be formed after a supernova explosion. See related questions
No, not a supernova.
it is Supernova
A Supernova. See related question
supernova
it is a steller explosion
Supernova
SuperNova
A supernova.
The energy output of a supernova explosion is equivalent to the energy produced by the sun over its entire lifetime.