Expedition 52 flight engineer Paolo Nespoli of ESA (European Space Agency), left, flight engineer Sergei Ryazanskiy of Roscosmos, center, and flight engineer Randy Bresnik of NASA, right, walk out Building 254 as they prepare to depart for the launch pad, Friday, July 28, 2017 in Baikonur, Kazakhstan. The Soyuz rocket launched at 11:41 a.m. EDT on July 28 (9:41 p.m. Baikonur time) to start Ryazanskiy, Bresnik, and Nespoli on a four and a half month mission aboard the International Space Station.