| Acronym | Meaning |
| RGB | Red Giant Branch |
| CSIRO | Commonwealth Scientific And Industrial Research Organization |
| HUT | Hopkins Ultraviolet Telescope |
| STSDAS | Space Telescope Science Data Analysis System |
| HLV | Heavy Lift Vehicle |
| A&A | Astronomy And Astrophysics |
| OSCAR | Orbiting Satellite Carrying Amateur Radio |
| SECO | Sustainer Engine Cutoff |
| ACF | Automated Control Function |
| MECO | Main Engine CutOff |