Stars so weird that they make black holes look boring: "When a giant star dies, it can collapse into a black hole or implode into an ultra-dense neutron star. But there are even stranger possibilities. Here are some theorized stars that make black holes look downright boring.
Before we get to all the weird stars, we should probably review the stars we already know about. Ordinary stars are just gigantic bodies of luminous plasma, most made up of hydrogen but also containing varying amounts of other elements. The mass of stars can vary quite a bit, from tiny red dwarfs to blue super-giants to average-sized yellow spheres like our Sun, but the internal makeup is all more or less the same.
When these stars reach the end of their lives, one of two things can happen. A medium or low mass star goes through a brief period of expansion, and then it contracts back into a white dwarf, a pale husk of the old star that can exist for incalculable eons. But if the star is massive enough, it will explode in a massive supernova, then collapse in on itself to form a neutron star, which can then ultimately become a black hole."