White dwarf star shows presence of pure oxygen

Researchers have discovered a rare white dwarf star with an atmosphere dominated by a pure layer of oxygen
Researchers have discovered a rare white dwarf star with an atmosphere dominated by a pure layer of oxygen – a type of white dwarf that has been theorised to exist but not identified till date.
The finding could challenge the textbook wisdom of single stellar evolution and provide a critical link to some types of supernovae discovered over the past decade.
As relatively small stars (