| Acronym | Meaning |
 | SPARTAN | Shuttle Pointed Autonomous Research Tool For Astronomy |
| FOLD | Federally-Owned LANDSAT Data |
| TAL | Transatlantic Abort Landing |
| ASP | Astronomical Society Of The Pacific |
| DSN | Deep Space Network |
| CDM | Cold Dark Matter |
| HEAO | High Energy Astronomical Observatory |
| LH | Liquid Hydrogen |
| DCX | Delta Clipper EXperimental |
| HR | Hertzsprung-Russell |
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