Peter, being able to blow up a whole star (a process that is obviously going to involve some kind of positive feedback cycle) is not the same as being able to start novas. A nova is not a detonation of a star. A nova is the detonation of a shell of hydrogen that has accumulated from a companion and compressed on the surface of a degenerate star (white dwarf).
Peter, being able to blow up a whole star (a process that is obviously going to involve some kind of positive feedback cycle) is not the same as being able to start novas. A nova is not a detonation of a star. A nova is the detonation of a shell of hydrogen that has accumulated from a companion and compressed on the surface of a degenerate star (white dwarf).