terraforming

verb
  1. 1

    To transform the atmosphere (or biosphere) of another planet into one having the characteristics of Earth.

Synonyms

noun
  1. 1

    The hypothetical process of deliberately modifying the atmosphere, temperature, surface topography or ecology of a planet, moon, etc. to make it similar to those of Earth and thus suitable for human life.

Source: https://en.wiktionary.org/wiki/terraform, https://en.wiktionary.org/wiki/terraforming