GURPS Space - assistance

[Agemegos]

Originally Posted by Whill

Thanks. Would there be any severe radiation or other habitability complications with a terrestrial planet at L4 or L5 when the gas giant is 4000 earth masses?

No. A gaseous body of 4,000 Earth-masses is getting on for being a brown dwarf rather than a gas giant, but L4 and L5 are just as far from the planet as they are from the star, so any radiation hazard from the planet will be dwarfed by that from the star.