Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
extraterrestrial geology  | |
|---|---|
| RT | cosmochronology |
| cosmic rays | |
| Apollo Program | |
| Apollo-Soyuz Program | |
| geology | |
| cosmic dust | |
| cosmochemistry | |
| exobiology | |
| Clementine Program | |
| expanding universe theory | |
| Earth-Moon couple | |
| Explorer Program | |
| Galileo Program | |
| Halley's Comet | |
| interplanetary comparison | |
| interpla | |
| SN | Broad topic used for studies about materials and processes outside the Earth, and for the discipline as a whole. For solar system or discussions of more than one planet, use planetology. |
| Extraterrestrial Geology (category) | |
|---|---|
| SN | Extraterrestrial geology, GeoRef category code 04, is one of thirty categories used to classify documents in GeoRef. Each reference in GeoRef is assigned one or more categories. Categories can be used, in addition to Terms, to refine searches (See List A. |