Space tourism is an industry with risks including health and safety, space debris, biological hazards, and sustainability concerns. However, there is limited research on the perceived risk of participation in space tourism, particularly regarding age and gender differences. An integrated research model was created and tested with four perceived risk dimensions using fuzzy-set Qualitative Comparative Analysis. A survey of 1000 South Korean residents over 18 who wanted to participate in space tourism was conducted. Results show significant differences in perceived risks between senior and younger groups, as well as male and female respondents. These findings offer valuable insights for space tourism stakeholders.