Molecular biology via epigenetics in space: the cosmonaut’s genes
After a year in space, the genes of U.S. astronaut Scott Kelly have changed, NASA reports. Dirk Schubeler explains why.

Suddenly seven percent different from his twin: US astronaut Scott Kelly Photo: dpa
site: Mr. Schubeler, after a year on the International Space Station, the genes of NASA astronaut Scott Kelly have changed by seven percent compared to those of his identical twin brother on Earth. Why does life in space change our genes?