| Acronym | Meaning |
 | NRSC | National Remote Sensing Centre |
| AJ | Astronomical Journal |
| CARA | Center For Astrophysical Research In Antarctica |
| GLOMR | Global Low-Orbiting Message Relay |
| USN | United States Navy |
| NASA | National Aeronautics And Space Administration |
| BNSC | British National Space Centre |
| DAO | Dominion Astrophysical Observatory |
| DAC | Delayed Action Command |
| TIROS | Television InfraRed Observation Satellite |
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