astronaut; space traveler
A person trained to travel or work in space; the general Japanese term for an astronaut.
彼女の夢は宇宙飛行士になることだ。
Her dream is to become an astronaut.
宇宙飛行士が国際宇宙ステーションで実験を行った。
The astronaut conducted experiments on the International Space Station.
He fulfilled his childhood dream and became an astronaut.
She is studying hard with the goal of becoming an astronaut.
He went to the International Space Station as an astronaut.