Washington: Scientists have made a rare discovery in the depths of space. A white dwarf star composed mainly of carbon and metallic oxygen has been identified at a distance of about 104 light-years from Earth. According to the Independent’s report, it can turn into a ‘cosmic diamond’ when it cools down. When a star like the Sun nears its end, it turns into a white dwarf star that is extremely hot. Some of these stars gradually harden and turn into crystals. Astronomers had seen one such star which has cooled down and its core can turn into a ‘cosmic diamond’. In a study, scientists have told about this white star. These dying dwarf stars glow with residual heat due to lack of fuel and cool down over time. Eventually they turn into black dwarf stars made of crystallized carbon. However, this process takes a quadrillion years.
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Since our universe is only 13.8 billion years old, it is not possible for us to see a fully crystallized star. But according to researchers, we can see signs of crystallization in the cores of white dwarf stars in the universe. The European Space Agency’s Gaia telescope has made it easier to measure a star’s distance from Earth based on its actual brightness and age.
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Discovery made possible by the Gaia Space Telescope
The discovery was made possible by data from the Gaia Space Telescope with a system of three stars called HD 190412. Researchers suspect that the star system is about 7.3 billion years old and that the white dwarf star may be about 4.2 billion years old. Scientists say that the discovery of this system so close to Earth suggests that there may be many similar star systems in the universe.