"A Catastrophic Event From Neptun's Past. The James Webb Space Telescope Helped Discover a Unique Event

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New observations that covered some of the months and rings of Neptune provide evidence of a catastrophe that took place billions of years ago around the most distant planet in the Solar System, during which an "intrusion of the size of Pluto caused a devastating cosmic chaos.

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Astronomers have just looked at the messy debris belt around Neptune and what they have seen does not fit the calm image we had of the eighth planet. The James Webb telescope has identified magnesium-rich clays on the surfaces of Proteus, Larisa and Galatea, three small inner moons of the planet, and also on their nearest dust rings. Those minerals are only formed where liquid water and rock live together for long geological periods, something i…