Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
Using the James Webb Space Telescope , astronomers discovered that Ariel, a moon of Uranus, could be hiding in a buried liquid water ocean. that has perplexed scientists: the fact Ariel's surface is covered with a significant amount of carbon dioxide ice. This is puzzling because at the distance, carbon dioxide turns to gas and is lost to space. This means some process must refresh the carbon dioxide at the surface of Ariel.
Comparing this to simulated spectra from a chemical mix in the lab here on Earth revealed to the team that Ariel has some of the most in the solar system. Not only did this add an extra 10 millimeters of thickness to the ice on the side of theAriel that permanently faces away from Uranus, but it also revealed clear deposits of carbon monoxide for the first time.
That means that the majority of the carbon/oxygen compounds seen on Ariel's surface could be created by chemical processes in a liquid water ocean trapped under ice on Ariel.Once created in the seep water ocean of Ariel, these carbon oxides could then escape through cracks in the icy shell of the Uranian moon or could even be explosively ejected by powerful eruptive plumes.
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