Misha’s and my mission to spend a year on ISS is unprecedented. A normal mission to the space station lasts five to six months, so scientists have a good deal of data about what happens to the human body in space for that length of time. But very little is known about what happens after month six. The symptoms might get precipitously worse in the ninth month, for instance, or they might level off. We don’t know, and there is only one way to find […]