Terraforming mission
A terraforming mission was a mission with the objective of terraforming a planet. 

In 2368, 's terraforming mission to Doraf I was cancelled due to Ambassador Spock's disappearance and possible defection to the Romulans. ()

In 2369, the , Thomas Riker's new posting, was heading on a terraforming mission to the Lagana sector. The trip alone would take four months. ()

See also
 Geo-terraforming vessel
 Terraform Command

Missions and expeditions