[rfp1234]

Space stations may prove to be effective penal colonies over the next decade, if Gitmo gets shut down.

[Fuzz]

lol. That would cost at least 60 million dollars per person just to get there.

[Indy Pendance]

Or a biodome on the moon.

[PIF]

Space stations may prove to be effective penal colonies over the next decade.
—
Uppity prisoner’s cell and cell blocks could simply be de-orbited, solving the problem on the cheap.

[wally_bert]

The Exosquad cartoon went with the concept of flinging the unwanted towards the sun.

Naturally the good guys were rescued before burning up.