22 giugno 2016. ESA astronaut Tim Peake, NASA astronaut Tim Kopra and commander Yuri Malenchenko landed in the steppe of Kazakhstan on Saturday, 18 June in their Soyuz TMA-19M spacecraft. The trio spent 186 days on the International Space Station. The landing brings Tim Peake’s Principia mission to an end but the research continues. Tim is the eighth ESA astronaut to complete a long-duration mission in space. He is the third after Alexander Gerst and Andreas Mogensen to fly directly to ESA’s astronaut home base in Cologne, Germany, for medical checks and for researchers to collect more data on how Tim’s body and mind have adapted to living in space.