Astronomy Abbreviations and Acronyms

1. NRO
   U.S. National Reconnaissance Office
2. NRT
   Near Real-Time
3. NS
   Neutron Star
4. NS
   Nearby Star
5. NSA
   National Security Agency
6. NSA
   Navigation Service Availability
7. NSA
   Neutron Star Atmosphere
8. NSA
   National Society of Astronomy
9. NSAS
   Northern Skies Astronomical Society
10. NSBD
    Normal Stars and Brown Dwarfs
11. NSC
    Navigational Star Catalog
12. NSC
    Nuclear Star Clusters
13. NSDA
    National Space Development Agency
14. NSF
    National Sanitation Foundation
15. NSI
    Nasa Science Internet
16. NSI
    Nasa Science Internet / Nasa Standard Initiator / National Environmental Satellite Data and Information Service
17. NSIF
    Near-Space Instrumentation Facility
18. NSINET
    Nasa Science Internet
19. NSL
    Northrop Space Laboratory
20. NSO
    National Solar Observatory

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