Astronomy Abbreviations and Acronyms

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

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