| Acronym | Meaning |
 | VLBA | Very Long Baseline Array |
| CDA | Command And Data Acquisition |
| PMC | Permanently Manned Capability |
| HALOE | Halogen Occultation Experiment |
| GRS | Gamma Ray Spectrometer |
| AACS | Attitude And Articulation Control Subsystem |
| U3P | Union Pour La Promotion De La Propulsion Photonique |
| LGA | Low Gain Antenna |
| KAO | Kuiper Airborne Observatory |
| JCMT | James Clerk Maxwell Telescope |
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