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they become a nebula
Under the influence of its own gravity, a nebula contracts, spinning faster and faster as it does. This is called is called conservation of angular momentum. Because of the spinning, the nebula flattens out to form a disk. As it continues to flatten and spin, it becomes denser and hotter, particularly in the center. This dense, hot center eventually forms into a star, the sun. The swirling mass destined to become a solar system is usually referred to as the solar nebula.
It becomes a white dwarf.
A nebula, in general, is not particularly hot. They are usually visible due to embedded stars.
a nebula is the cloud of radioactive material dust smoke and debris caused by an exploding start, a nebula happens after a nova or super nova..and somtimes the collapse of a start causes black holes too in which case you wont see a nebula because the massive amount of gravity in the black holes sucks everything in, but yes a nebula is the cloud left over from an exploding star
A supernova occurs.
That is hot enough to ignite hydrogen fusion, so the nebula becomes a star (possibly with planets).
A supernova occurs.
If there is sufficient mass and material it will contract due to gravity it may then become a star. The type of star depends on how much mass was present
A nebula.
A supernova occurs.
it contracts together to were it can't hold any more.
After a planetary nebula the oxygen in the middle will make it turn into a blackhole or neutron star.
they become a nebula
It formed the sun!!
this question cant really be answered its not a full question really sorry(begins to shrink and increases it s spin.)
The material at the center of a nebula clumps together as material is pulled there. This allows a star to form.