Astronomers discover a new type of Supernova, revealing inner layers of a dying star

Astronomers have identified a novel supernova, SN2021yfj, revealing the inner layers of a dying star. Located 2.2 billion light-years away, this Type Ien supernova exhibits significant amounts of silicon, sulfur, and argon, elements typically hidden within a star's core. The discovery challenges existing stellar evolution models, suggesting extreme mass loss can expose these inner layers before explosion.