The Artemis II mission crew faces a complex process of physical readjustment following their successful return, according to an April 10 statement. The effects of space travel on the human body have drawn increased attention as NASA’s lunar expedition concludes.
Extended stays in microgravity can lead to muscle loss and reduced bone density, as the body no longer supports its usual weight and muscles weaken without constant exercise. Fluid redistribution toward the upper body in weightlessness may also cause facial swelling and increased intracranial pressure, which can affect vision.
Upon returning to Earth, astronauts often experience balance problems, dizziness, and difficulty walking normally as their bodies readapt to gravity. Additional issues may include sleep disturbances, fatigue, and temporary weakening of the immune system.
Because of these risks, Artemis II crew members will undergo thorough medical evaluations and monitoring before resuming their regular activities.
The challenges faced by returning astronauts highlight the ongoing need for research into how spaceflight impacts human health.
