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NASA Subject Divisions
  NASA Subject Categories
     
AERONAUTICS
Includes aeronautics (general); aerodynamics; air transportation and safety; aircraft communications and navigation; aircraft design, testing and performance; avionics and aircraft instrumentation; aircraft propulsion and power; aircraft stability and control; and research and support facilities (air). For related information see also ASTRONAUTICS (categories 12 though 20).
 
01 Aeronautics (General)
02 Aerodynamics
03 Air Transportation and Safety
04 Aircraft Communications and Navigation
05 Aircraft Design, Testing and Performance
06 Avionics and Aircraft Instrumentation
07 Aircraft Propulsion and Power
08 Aircraft Stability and Control
09 Research and Support Facilities (Air)

ASTRONAUTICS
Includes astronautics (general); astrodynamics; ground support systems and facilities (space); launch vehicles and launch operations; space transportation and safety; space communications, spacecraft communications, command, and tracking; spacecraft design, testing and performance; spacecraft instrumentation and astrionics; and spacecraft propulsion and power. For related information see also AERONAUTICS (categories 01 through 09).
 
12 Astronautics (General)
13 Astrodynamics
14 Ground Support Systems and Facilities (Space)
15 Launch Vehicles and Launch Operations
16 Space Transportation and Safety
17 Space Communications, Spacecraft
     Communications, Command and Tracking

18 Spacecraft Design, Testing and Performance
19 Spacecraft Instrumentation and Astrionics
20 Spacecraft Propulsion and Power

CHEMISTRY AND MATERIALS
Includes chemistry and materials (general); composite materials; inorganic, organic and physical chemistry; metals and metallic materials; nonmetallic materials; propellants and fuels; and space processing.
  23 Chemistry and Materials (General)
24 Composite Materials
25 Inorganic, Organic and Physical Chemistry
26 Metals and Metallic Materials
27 Nonmetallic Materials
28 Propellants and Fuels
29 Space Processing

ENGINEERING
Includes engineering (general); communications and radar; electronics and electrical engineering; fluid mechanics and thermodynamics; instrumentation and photography; lasers and masers; mechanical engineering; quality assurance and reliability; and structural mechanics. For related information see also PHYSICS (categories 70 through 77).   31 Engineering (General)
32 Communications and Radar
33 Electronics and Electrical Engineering
34 Fluid Mechanics and Thermodynamics
35 Instrumentation and Photography
36 Lasers and Masers
37 Mechanical Engineering
38 Quality Assurance and Reliability
39 Structural Mechanics

GEOSCIENCES
Includes geosciences (general); earth resources and remote sensing; energy production and conversion; environment pollution; geophysics; meteorology and climatology; and oceanography. For related information see also SPACE SCIENCES (categories 88 through 93).   42 Geosciences (General)
43 Earth Resources and Remote Sensing
44 Energy Production and Conversion
45 Environment Pollution
46 Geophysics
47 Meteorology and Climatology
48 Oceanography

LIFE SCIENCES
Includes life sciences (general); aerospace medicine; behavioral sciences; man/system technology and life support; and exobiology.   51 Life Sciences (General)
52 Aerospace Medicine
53 Behavioral Sciences
54 Man/System Technology and Life Support
55 Exobiology

MATHEMATICAL AND COMPUTER SCIENCES
Includes mathematical and computer sciences (general); computer operations and hardware; computer programming and software; computer systems; cybernetics, artificial intelligence and robotics; numerical analysis; statistics and probability; systems analysis and operations research; and theoretical mathematics.   59 Mathematical and Computer Sciences (General)
60 Computer Operations and Hardware
61 Computer Programming and Software
62 Computer Systems
63 Cybernetics, Artificial Intelligence and Robotics
64 Numerical Analysis
65 Statistics and Probability
66 Systems Analysis and Operations Research
67 Theoretical Mathematics

PHYSICS
Includes physics (general); acoustics; atomic and molecular physics; nuclear physics; optics; plasma physics; solid-state physics; and physics of elementary particles and fields. For related information see also ENGINEERING (categories 31 through 39).

  70 Physics (General)
71 Acoustics
72 Atomic and Molecular Physics
73 Nuclear Physics
74 Optics
75 Plasma Physics
76 Solid-State Physics
77 Physics of Elementary Particles and Fields


SOCIAL AND INFORMATION SCIENCES
Includes social and information sciences (general); administration and management; documentation and information science; economics and cost analysis; law, political science, and space policy; and technology utilization and surface transportation.   80 Social and Information Sciences (General)
81 Administration and Management
82 Documentation and Information Science
83 Economics and Cost Analysis
84 Law, Political Science and Space Policy
85 Technology Utilization and Surface
     Transportation


SPACE SCIENCES
Includes space sciences (general); astronomy; astrophysics; lunar and planetary science and exploration; solar physics; and space radiation. For related information see also GEOSCIENCES (categories 42 through 48).   88 Space Sciences (General)
89 Astronomy
90 Astrophysics
91 Lunar and Planetary Science and Exploration
92 Solar Physics
93 Space Radiation

GENERAL
Includes aerospace related reports of a general or broad nature; histories, biographies, or overviews of aerospace programs.   99 General