From Halopedia, the Halo wiki
- January 1: The Odyssey is launched. The lead ship in the colony vessels, the Odyssey-laden with troops and terraforming gear-spearheads the colonization of a new world, Reach. This sparks the first wave of human expansion beyond the confines of the Solar System.
- The Committee of Minds for Security holds a working session to design feasible models for first-contact scenarios with potentially hostile extraterrestrial intelligences.
- The CAA First Reverie is built in orbit of Mars around this year. It is one of nearly a hundred colony ships to launch from Luna to colonise new worlds, igniting what would become known as the Domus Diaspora.