TNO = trans neptunian object, basically far out dwarf planet
Obviously there would be less sun to greenhouse, but theoretically could that be a way to have closer-to-earth habitats far away from a star?
edit: the TNO does not have to be like Pluto, it can be bigger or have different conditions
No, the greehouse effect involves the atmosphere trapping the sun’s heat, and at the distance of Neptune the sun just looks like another bright star - too far away to provide enough heat even to keep an atmosphere in a gaseous state. BUT… if a faraway planet (I’m just gonna go ahead and use that word) generates enough internal heat to keep its atmosphere gaseous, it wouldn’t need a greenhouse effect, or even a sun. It could roam around between stars and still maintain an atmosphere, and who knows… living things could evolve that get all their energy from heat instead of sunlight.