Terraforming

Terraforming is a hypothetical process that involves the formation of an atmosphere on the planet by raising the temperature so the world gets a biosphere that could support life. The process increases oxygen level in the atmosphere as the planet becomes habitable for human life. For example, the terraforming process on a world that is covered in ice can be terra formed by increasing the level of greenhouse gases that convert the planet's climate to Earth-like. There are many different processes that transform a planet. Terraforming may take several centuries.

Goa'uld used the devices for terraforming other worlds which they could place their slaves. They used terraforming process on the planet Avnil.

Lanteans had designed a device that could terraforming an entire planet without having to take several centuries.