[Rinnwald]

Not a lot of terra to form. Probably a small solid core surrounded by dense gases. Maybe a satellite city some day, at an orbit where the gravity won’t kill you.

[DannyTN]

Then we need to find a way to cause massive amounts of deposition of the gases into solids.

Perhaps we need to suck gasses off of Jupiter in amounts equal to the mass of earth and the mass of the moon. Taking into consideration the additional heat needs of the new planets given their distance from the Sun. And then convert the gases into solids creating several planets having good ol jupi-terra.

[saminfl]

Not a lot of terra to form. Probably a small solid core surrounded by dense gases. Maybe a satellite city some day, at an orbit where the gravity won’t kill you.

Heinlein's Farmer in the Sky was about that.