Making preparations for departure of three of his colleagues NASA astronaut Terry Virts, a flight engineer for Expedition 42 on the International Space Station tweeted this image down to his followers on Earth on Mar 11, 2015 with this candid message: "Our last minutes together as #Exp42 crew. It's been a pleasure serving on #ISS with these wonderful people'. Virts is now the Commander of Expedition 43 and his colleagues NASA astronaut Barry Wilmore (bottom right), cosmonaut Elena Serova (top right) and Alexander Samokutyaev ( top center) of the Russian Federal Space Agency (Roscosmos), have all landed safely back on Earth. The remaining crew with Virts in space is ESA (European Space Agency) astronaut Samantha Cristoforetti (bottom center) and cosmonaut Anton Shkaplerov (top left).