Investigation on impact of life in space on human body could inform potential missions to Mars
When Nasa set out to study identical twin astronauts – one orbiting in space for nearly a year, the other left behind on Earth – the outcome was uncertain. Would Scott Kelly return to Earth younger than his brother, Mark, as depicted in the film Interstellar?
The answer, outlined in the most comprehensive investigation on the impact of life in space on the human body, is that there were apparently no substantial or lasting health changes. However, the findings reveal subtle biological effects caused by Scott’s 11-month residence in zero gravity at the International Space Station. Scientists say these could provide crucial information about the risks posed by future long distance missions to Mars and beyond.