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Originally Posted by Erasmus00
Stars convert hydrogen to heavier elements. When you run out of hydrogen, you run out of stars.
-Will
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That would be true if we only defined stars as bright shining objects. The facts are that there are other objects in our universe that don't shine and they consist of the residual material left over when the bright shining stops. The first to come to mind would be what scientists call brown dwarfs. If the star is of sufficient mass, a neutron star can form from the remnant of a super-nova explosion. Here is where things get very mysterious for the next theoritical body to form could be, what is called a quark star. Astronomers have found a possible candidate for such an object but proof is still lacking. The threshold between quark star and black hole formation is so narrow that we may never get the opportunity to actually observe such an object. Amazing universe we live in, you and I.
