| Spacefleet | Concerning Spacefleet Association and its activities, and Spacefleet Ltd. |
| Space Policy | National government space policy, UN space policy. |
| Space Prizes | Anything connected with the X-Prize and the Space Prize, etc. |
| Cosmology | The physics and structure of the Universe and the nature of matter. |
| Space Law | Legal issues covering all activities off the Earth, e.g. resolution of disputes that take place on the ISS, the Moon, etc. The Outer Space Treaty |
| Employment | Employment in the Space Industry or University courses, etc. |
| Space Tourism | Commercial space ventures involving trasnporting paying public passengers into space. |
| Space Colonisation | Space travel, with a view to establishing permanent human presences on other celestial bodies. Space Arks, Large colonial space stations, etc. |
| Propulsion | Rocket motors of all kinds, engineering details, theory, novel propulsion methods. |
| Space Education | Teaching of space technology and astronomy to young people |
| Astronomy | The observation of stars, planets, galaxies and other celestial objects |
