Expedition 57 began Oct. 4, 2018, and continued until Dec. 20, 2018. The crew was tasked with performing dozens of experiments and overseeing the arrival of several cargo resupply vehicles and perform spacewalks. The initial three-person crew — European Space Agency astronaut Alexander Gerst, NASA astronaut Serena Aunon-Chancellor and Russian cosmonauts Sergey Prokopyev — was expected to be joined by Russian cosmonaut Aleksey Ovchinin and NASA astronaut Nick Hague on Oct. 11, 2018. However, an abort during their ascent in Soyuz MS-10 prevented them from joining the crew. They were instead joined by Russian cosmonaut Oleg Kononenko, NASA astronaut Anne McClain, and Canadian Space Agency astronaut David Saint-Jacques.