| Acronym | Meaning |
 | GUGK | Glavnoye Upravileniye Geodesii I Kartografii |
| SSME | Space Shuttle Main Engine |
| APT | Automatic Picture Transmission |
| TRMM | Tropical Rainfall Measuring Mission |
| IOTA | International Occultation Timing Association |
| VEEGA | Venus-Earth-Earth Gravity Assist |
| AOA | Abort Once Around (shuttle Abort Plan) |
| CCRS | Canada Centre For Remote Sensing |
| SAR | Search And Rescue / Synthetic Aperture Radar |
| IOBM | In Ocean By Mistake |
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