| Acronym | Meaning |
| GMRT | Giant Meter-wave Radio Telescope |
| NOAO | National Optical Astronomy Observatories |
| NASA | National Aeronautics And Space Administration |
| NICMOS | Near Infrared Camera/Multi Object Spectrometer |
| PDE | Particle Dispersion Experiment |
| ASS | Antenna Support Structure |
| GDS | Great Dark Spot |
| MSS | Multispectral Scanner |
| OSS | Office Of The Space Station |
| U3P | Union Pour La Promotion De La Propulsion Photonique |