| Acronym | Meaning |
| GUGK | Glavnoye Upravileniye Geodesii I Kartografii |
| LARC | Langley Research Center |
| FRR | Flight-Readiness Review |
| HD | Henry Draper Catalog Entry |
| SNR | Signal To Noise Ratio / SuperNova Remnant |
| SMS | Shuttle Mission Simulator |
| ACE | Advanced Composition Explorer |
| ZHR | Zenith Hourly Rate |
| SL-J | SpaceLab Japan |
| SAS | Space Activity Suit / Space Adaptation Syndrome |