| Acronym | Meaning |
 | EURECA | European Retrievable Carrier |
| KAO | Kuiper Airborne Observatory |
| CR | Correlation Radiometer |
| APU | Auxiliary Power Unit |
| NSI | NASA Science Internet / NASA Standard Initiator / National Environmental Satellite Data And Information Service |
| OPF | Orbiter Processing Facility |
| CMB | Cosmic Microwave Background |
| UDMH | Unsymmetrical DiMethyl Hydrazine |
| VPF | Vertical Processing Facility |
| ESO | European Southern Observatory |
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