Populations and Worlds

[Tor Cha (OP)]

Ok If you have a Terrestrial Planet that is Not Hostile to you You do not need to Put any thing down to Keep the Environment From Killing your Population!
What about Non Terrestrial Planets and World/Planets/Comets/Asteroids ?
Do you Put Up Domes over City's?  that is fine But what about Farm Land?? Dome them also? What of the H2O?
now I know that Some of the Cost of Putting a Pop on a Planet or Whatever Deals with some if not Most of that Problem.
I am just Needing Some Guidance From Steve , Eric Or someone that Knows the Answers.
I am Asking Because I am thinking of Putting a Penal Colony on a Planet/Small Moon. 

[83athom]

The generic "Infrastructure" simulates modular city blocks with services, food production, etc all built in.

[Tor Cha (OP)]

The generic "Infrastructure" simulates modular city blocks with services, food production, etc all built in.

I am sure that is Fine But what about Planets/moons/and other Smaller Body's? Or ones that are Dangerous to the Pop your Putting down on the Body?

[Hazard]

Underground/Low Gravity infrastructure covers this issue, as does the construction of orbital stations.

[MarcAFK]

http://aurorawiki.pentarch.org/index.php?title=Terraforming#Colony_Cost_and_Terraforming
A world that is perfectly habitable to your people is displayed as colony cost of 0.
This requires an acceptable gravity and atmosphere.
If a planet is within the gravity tolerance of your species then the colony cost displays how much infrastructure is needed to sustain a population on that body due to the hostile atmosphere, colony cost of 1 requires 100 infrastructure for 1 million people, cost of 2 requires 200 for a million, etc.
Reducing colony cost requires removing toxic gasses, changing the temperature to one acceptable to your species, lowering or raising the pressure, and finally ensuring there is the right quantity of oxygen.
If the body is very low gravity then you'll need to use underground infrastructure, which is always calculated as if the body has a colony cost of 3.0, and must be built on site, by the population and initially by construction engineers. Normal infrastructure costs 2 duranium each but underground costs 10 duranium, so it's more expensive and takes a while to build but is the only sensible option for low gravity colonies. Unless you use orbital habitats which have the advantage of being movable.