Technological achievement
Initial construction completed Apr. 16 2045 CE
As part of the extended Constellation program to enable extensive out-system exploration, the United Nations Aerospace Coalition planned a permanently-occupied station in low Mars orbit to follow up the Ares missions. In 2029, the core module of the International Mars Research Station arrived in Mars orbit. Additional modules were delivered by unmanned commercial spacecraft over the course of the early 2040s, and the IMRS received its first crew of 4 on April 16, 2045 to begin regular crew rotations.