| Acronym | Meaning |
 | GSOP | Ground Systems Operations |
| PSA | Pressure Switch Assembly |
| GCM | General Circulation Model |
| EDP | Embedded Data Processor |
| MHZ | Megahertz |
| ATM | Apollo Telescope Mount |
| ACO | Administrative Consent Order |
| ARIES | Automated Retirement And Integrated Extraction System |
| ATIS | Airport Terminal Information System |
| SMI | Solar Magnetism Initiative |
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