| Acronym | Meaning |
![](file.png) | ALPO | Association Of Lunar And Planetary Observers |
![](file.png) | HRI | High Resolution Imager |
![](file.png) | DESAT | Desaturation |
![](file.png) | CASCA | Canadian Astronomical Society |
![](file.png) | IKI | Institut Kosmischeskikh Issledovaniya |
![](file.png) | IRAS | InfraRed Astronomical Satellite |
![](file.png) | ORFEUS | Orbiting And Retrievable Far And Extreme Ultraviolet Spectrometer |
![](file.png) | EPD | Energetic Particles Detector |
![](file.png) | HST | Hubble Space Telescope |
![](file.png) | INMARSAT | International Maritime Satellite |