| Acronym | Meaning |
 | MOPITT | Measurements Of Pollution In The Troposphere |
| OTHB | Over The Horizon Backscatter |
| PAM | Payload Assist Module |
| FRC | Flight Research Center |
| NOAA | National Oceanic And Atmospheric Administration |
| CASCA | Canadian Astronomical Society |
| ALPO | Association Of Lunar And Planetary Observers |
| CELSS | Controlled Ecological Life Support System |
| ISY | International Space Year |
| ISM | InterStellar Medium |
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