NASA Twins Study: Why One Year in Orbit Changed Identical DNA

NASA conducted a unique study on the effects of space travel on the human body by sending one identical twin to the International Space Station for a year while the other remained on Earth. The study revealed significant biological changes in the astronaut twin, including shifts in gene activity, immune response, and telomere length, all of which returned to normal within six months of his return. The findings highlight the resilience of the human body but also underscore the need for careful management of health factors during extended space missions.