American Terry Virts, Italian Samantha Cristoforetti, and Russian Anton Shkaplerov landed in Kazakhstan after 199 days on the station.
Soyuz rocket carrying one American astronaut and two Russian cosmonauts launched from a facility in Kazakhstan.
Mike Griffin warns NASA’s dependence on Russian spacecraft to supply and staff the space station could jeopardize American participation.
An electrical malfunction forced astronauts to shut down 1 of 8 power channels.
After insisting that space relations wouldn’t be altered by earthly politics, NASA on Wednesday said it was severing ties with Russia except for the International Space Station.