| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | alien life | astronomers | The search for alien life focuses on microbial life forms in the universe. | 1 |
| 2 | extraterrestrial life | astrophysics community | Subject of research and exploration, actively sought after in space missions | 1 |
| 3 | life on other planets | Modern Astronomy | Explored scientifically through the search for extraterrestrial life | 1 |