neutron stars
It is an adverb phrase, although in forms such as "The period after a supernova is marked by stellar collapse" it seems to be an adjective phrase.
When a large star collapses in a supernova, it can produce either a neutron star or a black hole, depending on the mass of the original star. A neutron star forms when the core of the star collapses but the outer layers are ejected, while a black hole forms when the core collapses completely.
A small dead star is typically a white dwarf, which is the leftover core of a star that was not massive enough to become a supernova. White dwarfs are very dense, about the size of Earth but with the mass of a star.
it is Supernova
The solar system was formed from the interstellar gases and from remnants of a past supernova as evidenced by the presence of metals with atomic numbers higher than iron. These elements can only be formed in a supernova.
Neutron star
No. Comets are made from the leftover material when a solar system forms.
A leftover piece of material is commonly referred to as a scrap.
Leftover material can be referred to as scraps, remnants, or remnants.
No, a black hole is not typically a supernova remnant. A black hole is formed when a massive star collapses under its own gravity, creating a region of spacetime from which nothing, not even light, can escape. On the other hand, a supernova remnant is the leftover material from a massive star's explosion in a supernova event.
The material sent into space by a supernova is called supernova ejecta. It includes elements such as hydrogen, helium, carbon, oxygen, and heavier elements created during the supernova explosion.
offcuts
A material scrap is typically referred to as a waste material, leftover material, or remnant.
Scrap
Waste
Leftover material is called scrap.
Residue or remnants.