ESA astronaut Paolo Nespoli and crewmates Dmitri Kondratyev and Catherine Coleman are helped after landing back on Earth from their Soyuz TMA-20 spacecraft on May 24, 2011 in Zhezkazgan, Kazakhstan. The mission of the Soyuz TMA-20 was launched last December to the International Space Station with the flight engineers Catherine Coleman from the United States, Russian cosmonaut Dmitry Kondratyev and Italian astronaut Paolo Nespoli. The next expedition is expected to launch this June. (Photo by Stephane Corvaja/ESA via Getty Images)

ESA astronaut Paolo Nespoli looks on after landing back on Earth from their Soyuz TMA-20 spacecraft on May 24, 2011 in Zhezkazgan, Kazakhstan. (Photo by Stephane Corvaja/ESA via Getty Images)

ESA astronaut Paolo Nespoli and crewmates Dmitri Kondratyev and Catherine Coleman look on after landing back on Earth from their Soyuz TMA-20 spacecraft on May 24, 2011 in Zhezkazgan, Kazakhstan. (Photo by Stephane Corvaja/ESA via Getty Images)