Artist's drawing of a terraformed Mars
in four stages of development
Terraforming is changing a planet that we cannot live on at present. The idea is to change it so some life from Earth could esist there. It would need a suitable atmosphere (air), heat, and water.
Some think it is possible to terraform Mars, our Moon, Titan, Callisto and Mercury.
- ↑ Oberg, James Edward 1981. New Earths: restructuring Earth and other planets. Stackpole Books, Harrisburg, PA.