| Acronym | Meaning |
 | FRF | Flight Readiness Firing |
| HDE | Henry Draper Extension |
| GPPF | Gravitational Plant Physiology Facility |
| SAS | Space Activity Suit / Space Adaptation Syndrome |
| MFPE | Misson From Planet Earth |
| TAI | International Atomic Time |
| SSO | Spurious Shut-off |
| GSC | Guide Star Catalog |
| NESDIS | National Environmental Satellite Data And Information Service. |
| ENAC | Energetic Neutral Atom Camera |
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