Complex sentence: In late 2011, Russian Space Agency Chief Vladimir Popovkin announced that Serova would fly to the International Space Station, expected to spend up to six months in space performing biophysics and medical experiments.
Split into simpler sentences: In late 2011, Russian Space Agency Chief Vladimir Popovkin announced that Serova will fly to the International Space Station. She is expected to spend up to six months in space performing biophysics and medical experiments.