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

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.

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Trechos de apoio da pauta: 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.

• Ponto de atenção: ultramassive.
• Ponto de atenção: white.
• Ponto de atenção: dwarf.

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