| Acronym | Meaning |
 | MODIS | Moderate Resolution Imaging Spectrometer |
| SIXA | Silicon X-ray Array |
| TAL | Transatlantic Abort Landing |
| RA | Right Ascension |
| VTVL | Vertical Takeoff Vertical Landing |
| WSGT | White Sands Ground Terminal |
| MARS | Series Of Soviet Mars Spacecraft |
| PMS | Pre-Main Sequence |
| SMM | Solar Maximum Mission |
| NSI | NASA Science Internet / NASA Standard Initiator / National Environmental Satellite Data And Information Service |
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