Multiple reports say Canadian astronaut Jeremy Hansen, one of four crew members for NASA’s Artemis II, is retiring after completing a single mission that flies around the Moon. The articles refer to Artemis II as a historic flight that has already taken place earlier this year, with the crew conducting a lunar flyby as part of the program’s next phase toward human Moon landings. The coverage frames Hansen’s decision as a personal retirement following his participation in that mission, rather than a statement about changes to NASA’s broader Artemis timeline. One outlet includes a social media reaction questioning what astronauts may see in space that they would not want to return for, though it does not add specific new details about Hansen’s reasons beyond the retirement announcement. Overall, the sources align on the core facts: Hansen is an Artemis II astronaut, Artemis II involved a mission around the Moon, and Hansen is now stepping away from further flight roles after that one mission.