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10 billion years later, the sun can turn into a crystalline sphere. Medium-sized stars, like the Sun, complete their evolution in the form of gray, dense and extinct white dwarves.
This is written by Naked Science, with reference to the article by Pierre-Emmanuel Tremble and his colleagues at the University of Warwick, published in the journal Nature.
Scientists assume that when reducing temperature after stopping thermonuclear reactions in the dense core of white dwarves crystallization of carbon atoms and oxygen can occur.
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When the temperature in the nucleus of such a star decreases to a certain level (about 10 million degrees Celsius), it is possible to heat the old star, slowing down aging. the liquid begins to crystallize.
"All white dwarfs crystallize at a certain stage in their evolution, which means that billions of white dwarfs in our galaxy have already completed this process and have almost completely transformed into crystalline spheres. end of 10 billion years. "- says Tremblay
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