pRussian cosmonaut Fyodor Yurchikhin and US astronaut Jack Fisher arrived at the International Space Stationa on Thursday, April 20. The pair departed on a rocket from Baikonur Cosmodromea in southern Kazakhstan hours earlier.ppThe two arrived at 9:18 am, having departed at 3:13 am from Kazakhstan. They joined commander Peggy Whitson and flight engineers Oleg Novitskiy and Thomas Pesquet on the ISS.