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Friday, 19 September 2025

Alien water worlds were just a mirage

A new study challenges the dream of water-rich “Hycean” planets like K2-18b, suggesting that most sub-Neptunes lose their water deep into their interiors during formation. Instead of vast oceans, these worlds likely retain only a few percent of water at the surface.

from All Top News -- ScienceDaily https://ift.tt/fkC47D9

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