| Acronym | Meaning |
 | NS | Neutron Star |
| DPSS | DATA Processing Services Subsystem |
| E | Elliptical (for Galaxies) |
| SPOT | Systeme Probatoire Pour L'Observation De La Terre |
| FPM | Fiber Pulling In Microgravity |
| FPD | Flight Projects Directorate |
| FOS | Faint Object Spectrograph |
| FRC | Flight Research Center |
| DDCU | DC-to-DC Converter Unit |
| AOA | Angle Of Attack |
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