Astronomy Abbreviations and Acronyms

1. RRAT
   Rotating RAdio Transient
2. RRL
   Rr Lyrae
3. RS
   Resource Scheduler
4. RS
   Reed-Solomon error detection
5. RS-25D
   Core Stkge Engine
6. RSA
   Romanian Space Agency
7. RSA
   Russian Space Agency
8. RSA
   Revised Shapley Ames
9. RSA
   Revised Shapley-Ames
10. RSAA
    Research School of Astronomy and Astrophysics
11. RSB
    Research Support Branch
12. RSDP
    Routine Science Data Processing
13. RSFC
    Radially Stratified Flame Core
14. RSG
    Red Super Giant
15. RSI
    Research Systems, Inc.
16. RSN
    Radio Supernova
17. RSN
    Real Soon Now [which may be a long time coming]
18. RSNA
    The Radiological Society of North America, Inc.
19. RSO
    Resident Space Object
20. RSS
    Radio-Sky Spectrograph

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