Carbon-rich alien planets could be made of diamonds

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This visualization shows a carbon-rich planet with a high concentration of diamond and silica. (Image credit: Shim/ASU/Vecteezy)Some far-off alien planets could be made of diamonds, scientists say.With the right conditions like the presence of water heat and pressure, exoplanets with high concentrations of carbon could turn into diamonds, scientists found in a new study. These exoplanets could also form silica, an oxide of silicon that is found as quartz in nature, the researchers added”These exoplanets are unlike anything in our solar system,” lead author Harrison Allen-Sutter, a graduate associate at Arizona State University’s School of Earth and Space Exploration, said in a statement. Related: Super-Earth planet likely made of diamondStars and planets in the same solar system form from the same cloud of gas and dust, so they usually have some similarities in composition. While planets like Earth often orbit stars with lower carbon-to-oxygen ratios, exoplanets that orbit around stars with a higher carbon-to-oxygen ratio are more likely going to be carbon-rich. So, while Earth has a low diamond content (about 0.001%), carbon-rich exoplanets could be diamond-heavy, researchers said in the same statement.To test how and if such planets could form diamonds (and silica), scientists …

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