NSA means Neutron Star Atmosphere in Astronomy
Similar to NSA
APT - Automatic Photometric TelescopeAQR - Aquarius
ARAA - Annual Review of Astronomy and Astrophysics
ARGUS - Astronomical Research Group Under Stars
ASAS - All Sky Automated Survey
ASCH - Alien Societies Culture And History
ASLV - Advanced Satellite Launch Vehicle
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