| Acronym | Meaning |
 | BFC | Backup Flight Computer |
| RTG | Radioisotope Thermoelectric Generator |
| TRMM | Tropical Rainfall Measuring Mission |
| NIST | National Institute For Standards And Technology |
| ATDRS | Advanced Tracking And Data Relay Satellite |
| SDSS | Sloan Digital Sky Survey |
| M | Messier |
| GMS | Geostationary Meterological Satellite |
| SOCC | Satellite Operations Control Center |
| SEPAC | Space Experiments With Particle Accelerators |
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