Tag: supernova

In a first, an image shows a dying star exploded twice to become a supernova 

As this helium layer grows, it eventually ignites, triggering a smaller explosion that compresses the white dwarf’s core.

Stunning image of a supernova reveals a dead star that exploded twice

Two concentric rings appear around the supernova remnant SNR 0509-67.5, indicating that it exploded twiceESO/P. Das et al.