noun
generation ship; interstellar ark
Science fiction term for a starship designed for multi-generational interstellar travel, where the original crew's descendants complete the journey.
SF小説では、世代宇宙船がよく登場する。
Generation ships often appear in science fiction novels.
この世代宇宙船は、目的地に着くまでに数百年かかる設定だ。
This generation ship is set to take several hundred years to reach its destination.
Compound of 世代 (generation) + 宇宙船 (spaceship). A calque from English 'generation ship'.