[jessriedel]

Like the interior of the planet, the atmosphere is overwhelmingly hydrogen and helium. And helium is liquid even at 0 temperature unless under pressure, so presumably (?) would be liquid on the surface. These materials are mechanically very different than the silcates and metals dominating the Earth’s crust, and I don’t think we even have well measured bulk properties? Not sure what erosion processes would look like.

[anton-c]

That's wild to think about. My mind is struggling to picture 'liquids on the surface' of Jupiter. No idea what that would look like.

[jessriedel]

I am deeply looking forward to the dragonfly mission to Titan, since we'll finally get high-resolution color images from the surface, which has liquid seas of hydrocarbons like methane and ethane at -290 F.

https://en.wikipedia.org/wiki/Dragonfly_(Titan_space_probe)

The single image from the surface by the Huygens probe leaves a lot to be desired.

https://en.wikipedia.org/wiki/Titan_(moon)#/media/File:Huyge...

[anton-c]

Yeah this is gonna be awesome, appreciate the heads up!