| Acronym | Meaning |
 | ATAL | Alternate Transoceanic Abort Landing |
| JAEL | JSC Avionics Engineering Laboratory |
| AXAF | Advanced X-ray Astrophysics Facility |
| HUT | Hopkins Ultraviolet Telescope |
| ALEXIS | Array Of Low Energy X-ray Imaging Sensors |
| MPEC | Multi-Purpose Experiment Canister |
| EROS | Earth Resources Observations System |
| WFPCII | Replacement For WFPC |
| IBSS | Infrared Background Signature Survey |
| SEP | Societe Europeenne De Propulsion |
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