Astronomy Abbreviations and Acronyms

1. ORSES
   Operationally Responsive Space Enabler Satellite
2. OS
   Operating System
3. OSB
   Operations Software Branch
4. OSC
   Orbital Sciences Corperation
5. OSC
   One Shot Color
6. OSC
   Orbital Sciences Corporation
7. OSCAR
   Orbital Satellite Carrying Amateur Radio
8. OSCAR
   Orbiting Satellite Carrying Amateur Radio
9. OSG
   Observatory Support Group
10. OSHA
    Occupational Safety and Health Act (1970)
11. OSIRIS-3U
    Orbital Satellite for Investigating The Response of The Ionosphere To Stimulation and Space Weather - 3 Unit Cubesat
12. OSIRIS-REX
    Origins Spectral Interpretation Resource Identification Security Regolith Explorer
13. OSL
    Orbiting Solar Laboratory
14. OSNSAT
    Open Space Network Satellite
15. OSO
    Orbiting Solar Observatory
16. OSPM
    Operating System
17. OSS
    Observation Support System
18. OSS
    Ohio Sky Survey
19. OSS
    Office of Space Sciences
20. OSS
    Office of Space Science (NASA)

Last updated: August 3, 2021 — Total entries: 5,937