Astronomy Abbreviations and Acronyms

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

Last updated: August 3, 2021 — Total entries: 5,938