Vostok 2 ( Russian : Восток-2 , Orient 2 or East 2 ) was a Soviet space mission which carried cosmonaut Gherman Titov into orbit for a full day on August 6 , 1961 to study the effects of a more prolonged period of weightlessness on the human body .
It carried cosmonaut Gherman Titov into orbit for a full day to study the effects of a long period of weightlessness on the human body .