| Acronym | Meaning |
 | GRTLS | Glide RTLS |
| MRSR | Mars Rover And Sample Return |
| VTHL | Vertical Takeoff Horizontal Landing |
| FOS | Faint Object Spectrograph |
| STIKSCAT | Stick Scatterometer |
| NIMS | Near Infrared Mapping Spectrometer |
| OCST | Office Of Commercial Space Transportation |
| WFPCII | Replacement For WFPC |
| FRSI | Flexible Reusable Surface Insulation |
| SPAN | Space Physics And Analysis Network |
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