| Acronym | Meaning |
 | S | Spiral (for Galaxies) |
| WFPCII | Replacement For WFPC |
| CFPA | Center For Particle Astrophysics (Berkeley) |
| SSRMS | Space Station Remote Manipulator System |
| CDA | Command And Data Acquisition |
| SB | Spiral |
| RASC | Royal Astronomical Society Of Canada |
| SAS | Space Activity Suit / Space Adaptation Syndrome |
| POCC | Payload/Platform Operations Control Center |
| LRB | Liquid Rocket Booster |
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