Terraforming module

Main article: Terraforming

Like an asteroid mining module, a terraforming module is used in lieu of a terraforming installation. Unlike asteroid mining modules, however, they can work on any interstellar body (which is good, unless you like adding atmosphere to uninhabitable asteroids). Terraforming modules produce atmosphere at the same rate as a terraforming installation, however because they're manned by crew they don't require infrastructure and population to run. Because of this, it is quite common to see empires that exclusively use terraforming modules and completely ignore infrastructure and terraforming installations altogether.

In order to use a terraforming module, you must first create a colony on the world you plan to inhabit. From the F9 menu, select a habitable planet you want to terraform and establish a colony there. On the Population and Production page (F2), select the new colony and go to the "Environment" tab. Select the gas you want to add or remove, and the terraforming module will begin to add or remove the gas accordingly.