| Acronym | Meaning |
| SL | (Comet) Shoemaker-Levy / SpaceLab |
| HLC | Heavy Lift Capability |
| PMIRR | Pressure Modulated InfraRed Radiometer |
| DPSS | DATA Processing Services Subsystem |
| VMF | Voenno-Morskoy Flot |
| CCDS | Centers For The Commercial Development Of Space |
| SIXA | Silicon X-ray Array |
| SR | Special Relativity |
| LERC | Lewis Research Center |
| NSI | NASA Science Internet / NASA Standard Initiator / National Environmental Satellite Data And Information Service |