航天员 (hángtiānyuán): This term refers to astronauts or cosmonauts who are trained to travel and work in space.
空间站 (kōngjiānzhàn): This term refers to a space station, which is a large spacecraft that remains in low Earth orbit for an extended period of time and serves as a base for human activities in space.
太空探索 (tàikōng tànsuǒ): This term refers to space exploration, including the study of celestial bodies, manned missions, and the development of technologies for space travel.