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Home / Science / Our sun will turn into a solid crystal in 10 billion years – Axios

Our sun will turn into a solid crystal in 10 billion years – Axios



In about 10 billion years, our sun will probably become a white dwarf – an extremely dense shrunken star whose nuclear nucleus has burned and freed itself from its outer layers.

A new study published Wednesday in the journal Nature states to reveal the first evidence that white dwarfs form solid crystal nuclei containing metallic oxygen and carbon. The oldest white dwarfs, according to the study, could be almost completely composed of crystals.

Why it is important: The process of crystallization, similar to water that turns into ice but which occurs at much higher temperatures (about 1

0 million degrees Celsius), slows down the cooling of these stars, potentially making them billions of years older than initially thought. Scientists use white dwarfs as time markers to get a better idea of ​​the age of the surrounding stars and planets.

What they did: The astronomers of the University of Warwick in the United Kingdom used the observations of the European Space Agency Satellite Gaia to examine the luminosity and colors of about 15,000 white candidates dwarfs in about 300 light years of the Earth.

  • They found a large number of stars that had colors and brightness & # 39; which seemed to correspond to the phase in the development of a star when & & 39; releasing huge amounts of latent heat, which translates into a slower cooling process.
  • According to a press release, these stars may have slowed their aging by 2 billion years.

"This means that billions of white dwarfs in our galaxy have already completed the process and are essentially crystal spheres in the sky."

– Leading author of the study, the astronomer Pier-Emmanuel Tremblay, in a declaration

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