| Acronym | Meaning |
 | ANSI | American National Standards Institute |
| MRSR | Mars Rover And Sample Return |
| IPAC | Infrared Processing & Analysis Center |
| COMSAT | Communications Satellite (Corporation) |
| PM | Pressurized Module |
| GTO | Geostationary Transfer Orbit |
| MOPITT | Measurements Of Pollution In The Troposphere |
| IOTA | Infrared-Optical Telescope Array |
| SID | Sudden Ionospheric Disturbance |
| ELDO | European Launcher Development Organisation |
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