| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | dark matter | astronomy research community | A subject of extensive scientific research and inquiry | 1 |
| 2 | dark matter | astronomy researchers | A critical subject of study in understanding the universe's structure and evolution | 1 |
| 3 | dark matter | astrophysicists | Hypothesized form of matter that does not emit or interact with electromagnetic radiation | 1 |
| 4 | dark matter | astrophysics community | Undetectable by current technology, but hypothesized to make up a significant portion of the universe's mass. | 1 |
| 5 | dark matter | astrophysics community | Key component in understanding the formation of galaxies and the universe | 1 |