Jupiter's Great Red Spot may hold liquid water and LIFE

[Nyvis]

They can be considerably more massive, but without stellar heating all that massive would still compress into a planet little bigger than Jupiter.

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Makes sense. Thanks for the information.

 

[xa na xa]

Also once you're fusing lead you're losing energy and anything heavier only more so.

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Iron, not lead.

 

[Spartakrod]

Honestly, Jupiter's only barely not a Brown Dwarf.

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It's less than 10% of the way there if we're going by its mass given the "thirteen Jupiter mass" average threshold for Brown Dwarfdom. To be a Red Dwarf would take eighty or so times the mass.

I wouldn't say it's "barely" not a brown dwarf.