| Acronym | Meaning |
 | RHC | Rotational Hand Controller |
| AAVSO | American Association Of Variable Star Observers |
| APU | Auxiliary Power Unit |
| HDE | Henry Draper Extension |
| SOHO | SOlar Heliospheric Observatory |
| OSSA | Office Of Space Science And Applications |
| CFC | ChloroFluoroCarbon |
| POCC | Payload/Platform Operations Control Center |
| CELSS | Controlled Ecological Life Support System |
| DC | Delta Clipper |
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