NASA allowed members of the media to observe Japanese astronaut Akihiko Hoshide during a training session at Johnson Space Center in Texas.
Hoshide will head to the International Space Station this summer aboard the Russian spacecraft Soyuz for a five-month stay.
Hoshide's training on Monday involved the remote operation of the ISS's robotic arm. It will be used to grab a Japanese unmanned supply spaceship.
During his upcoming mission, Hoshide is expected to look into possible effects of cosmic radiation and zero gravity found in outer space.
The Japanese astronaut said he wants to contribute to the future of space development by using himself as a human subject in the study.
He previously stayed on the space station for eight days in 2008.