Another Explanation for K2-18b? A Gas-Rich Mini-Neptune with No Habitable Surface

Supercriticality and atmospheric kinetics make K2-18b difficult to understand. Water world? Lava world? Or gaseous mini-Neptune?

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Nicholas Wogan ,Ames Research Center ,Space Science Division ,Hydrogen Helium ,Webb Space Telescope ,Hycean World ,Single Object Slitless Spectroscopy ,