| Acronym | Meaning |
 | HTHL | Horizontal Takeoff Horizontal Landing |
| ICE | International Cometary Explorer |
| FRF | Flight Readiness Firing |
| LGM | Little Green Men |
| MODIS-T | MODIS-Tilt |
| APT | Automatic Photoelectric Telescope |
| RFI | Radio Frequency Interference |
| C&T | Communications & Tracking |
| LARC | Langley Research Center |
| CCRS | Canada Centre For Remote Sensing |
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