| Acronym | Meaning |
| HRMS | High Resolution Microwave Survey |
| WFPC | Wide Field/Planetary Camera |
| NASP | National AeroSpace Plane |
| EVA | Extravehicular Activity |
| NOAO | National Optical Astronomy Observatories |
| MB | Manned Base |
| GGM | Goskogidromet/Gidromettsentr |
| RNGC | Revised New General Catalog |
| MCCC | Maragone Convection On Closed Containers |
| APT | Automatic Photoelectric Telescope |