| Acronym | Meaning |
 | DOE | Department Of Energy |
| MAS | Millimeter-wave Atmospheric Sounder |
| VLBI | Very Long Baseline Interferometry |
| SCT | Schmidt-Cassegrain Telescope |
| ALDP | Advanced Launch Development Program |
| VAS | VISSR Atmospheric Sounder |
| SPTN | SPARTAN |
| GST | Greenwich Sidereal Time |
| SSME | Space Shuttle Main Engine |
| LY | Light Year (usu. Ly) |
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