An ultramassive white dwarf half Earth's size may hold a rare oxygen-neon core

Astronomers have found evidence that one of the most massive white dwarfs known has an oxygen-neon core instead of the more common carbon-oxygen core. The finding is important because the composition of a white dwarf's core determines how it will evolve. A paper outlining this di This story matters for Science & Discovery readers tracking mech. Reported by phys.org. Read the full original at the source link below.