did you know that the sun is are star. when you see the star come down that we the star forms :)
The mass forces the star to form
a nebula is cloud of particles which forms into a star.
It all depends on mass. If its over the point of where a neutron star can form then it forms a black hole. If its below it then it'll form a neutron star.
Well,a proto star is a new star.So whena new star forms the other star is no longer a proto star.
nebula.
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A red giant forms when a main sequence star that has been contracting suddenly expands and cools.
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Protostars are the beggining of stars
A quark star is a hypothetical star that forms when a star that is too big to form a neutron star but less than a black hole collapses the neutrons slightly into their component particles.
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Stars like our Sun.