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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.[1]

References[change | change source]

  1. Oberg, James Edward 1981. New Earths: restructuring Earth and other planets. Stackpole Books, Harrisburg, PA.