Replying...
Intro. Long into the future of the universe, if protons do not decay, stars will run on heavier and heavier material, until they reach Iron. Iron is the most stable, meaning that this is the last stage of starbirth, and that it is the end of stars as we know them, though, due to friction and pressure, these Iron balls could begin to emitt heat as if they were stars, giving us an iron star of sorts.

Iron Star

@B18