Terraforming

Terraforming is the process of turning barren or inhospitable planets into ones that can sustain life by modifying the atmosphere, terrain or orbit of a planet. Humanity is infamous for being terrible at terraforming, with most corporations cutting costs resulting in barely liveable worlds with thin atmospheres.

Process
Depending on the type of planet, various changes need to be made to the atmospheric composition. The more changes that need to be made to a planet, the more it costs. First the planet needs to be situated in the habitable zone so that the temperature is appropriate to support life. An atmosphere needs to be created, this is achieved by transporting billions of tonnes of gases such as Oxygen and Nitrogen and releasing them into the atmosphere.