| Acronym | Meaning |
 | NRO | National Reconnaissance Office |
| IRFNA | Inhibited Red Fuming Nitric Acid |
| CITA | Canadian Institute For Theoretical Astrophysics |
| BH | Black Hole |
| MOLA | Mars Observer Laser Altimeter |
| RMCD | Radaiation Monitoring Container Device |
| DDTE | Design |
| TSTO | Two Stage To Orbit |
| GRU | Glavnoye Razvedivatel'noye Upravileniye |
| BBXRT | Broad-Band X-Ray Telescope |
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