As a massive star evolves, it forms onion-layered shells of fusing elements (a). When the inert iron core reaches an unsustainable mass, it collapses into neutrons (b–c). The descending matter rebounds (d–f), forming a Type II supernova
(echo:: @ ᯤ)
As a massive star evolves, it forms onion-layered shells of fusing elements (a). When the inert iron core reaches an unsustainable mass, it collapses into neutrons (b–c). The descending matter rebounds (d–f), forming a Type II supernova
(echo:: @ ᯤ)