| Acronym | Meaning |
| SNG | Sodruzhestva Nezabisimikh Gosudarst |
| MSOCC | Multisatellite Operations Control Center |
| SIXA | Silicon X-ray Array |
| ACTS | Advanced Communications Technology Satellite |
| EROS | Earth Resources Observations System |
| DARA | Deutsche Agentur Fuer Raumfahrtangelegenheiten |
| DFRF | Dryden Flight Research Facility |
| EPD | Energetic Particles Detector |
| LY | Light Year (usu. Ly) |
| APM | Atmospheric Particle Monitor |