| Acronym | Meaning |
| ELV | Expendable Launch Vehicle |
| OCTS | Ocean Color And Temperature Scanner |
| MOTV | Manned Orbital Transfer Vehicle |
| BECO | Booster Engine Cutoff |
| APL | Applied Physics Laboratory (at Johns Hopkins) |
| CASSINI | Saturn Orbiter And Titan Probe |
| USO | Ultra-Stable Oscillator |
| CCSDS | Consultative Committee For Space Data Systems |
| HLC | Heavy Lift Capability |
| HERA | Hermes Robotic Arm |