The odd image of a supernova reveals a dead star that burns twice
Two concentric rings appear around the supernova remaining SNR 0509-67.5, indicating it explodes twice ESO / p. Das et al. Background stars (Hubble): K. Noll et al. A White Dwarf Star is about 160,000 years of light distance found to have been detained – the first evidence of astronomers saw that such supernovae involved a…