It could be raining diamonds on planets throughout the Universe, scientists suggested Friday, after using common plastic to recreate the strange precipitation believed to form deep inside Uranus and Neptune.
Scientists had previously theorized that extremely high pressure and temperatures turn hydrogen and carbon into solid diamonds thousands of kilometers below the surface of the ice giants., inserted oxygen into the mix, finding that"diamond rain" could be more common than thought.
Under the surface of the planets is believed to be a"hot, dense liquid", where the diamonds form and slowly sink down to the rocky, potentially Earth-size cores more than 10,000 kilometers below, he said. Aiming to replicate the process, the research team found the necessary mix of carbon, hydrogen, and oxygen in a readily available source – PET plastic, which is used for everyday food packaging and bottles.
"Very, very short X-ray flashes of incredible brightness" allowed them to watch the process of nanodiamonds – tiny diamonds too small to see with the naked eye – as they formed, Kraus said.
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