| Acronym | Meaning |
 | LTP | Lunar Transient Phenomenon |
| SLAP | Space Link Access Protocol |
| A&A | Astronomy And Astrophysics |
| EDS | Electronic Data Systems |
| HOTOL | HOrizontal TakeOff And Landing |
| BFC | Backup Flight Computer |
| HIRDLS | High Resolution Dynamics Limb Sounder |
| PN | Planetary Nebula |
| IAUC | IAU Circular |
| ESIS | European Space Information System |
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