NASA astronaut Tracy Dyson gestures from a bus while leaving for a pre-launch preparation ahead of the 21st visiting expedition to the International Space Station (ISS) at the Baikonur Cosmodrome, Kazakhstan. Russian space agency Roscosmos will launch a Soyuz spaceship with an international crew of Russian cosmonaut Oleg Novitsky and NASA astronaut Tracy Dyson and Marina Vasilevskaya, the first female spacefarer from Belarus in the European country's post-Soviet history, on March 21.