In this artist's view the red supergiant supernova progenitor star (left) is exploding after having transferred about 10 solar masses of hydrogen gas to the blue companion star (right).
An international team of astronomers has, for the first time, observed a stellar "survivor" to emerge from a double star system involving an exploded supernova. Supernovae are some of the most significant sources of chemical elements in the universe, and they are at the heart of our understanding of the evolution of galaxies.
