| Acronym | Meaning |
 | USMP | United States Microgravity Payload |
| SMM | Solar Maximum Mission |
| FFCC | Free-Flyer Control Centre |
| SPDM | Special Purpose Dextrous Manipulator |
| MECO | Main Engine CutOff |
| IBSS | Infrared Background Signature Survey |
| MFPE | Misson From Planet Earth |
| CRL | Communication Research Lab |
| VTVL | Vertical Takeoff Vertical Landing |
| ALEXIS | Array Of Low Energy X-ray Imaging Sensors |
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