2.30 Space sciences

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Key to thesaurus abbreviations

Astronomical systems [U]

NT1 Meteorites [U]

NT1 Solar system [U]

    NT2 Planets [U]

        NT3 Earth (planet) [U]

    NT2 Satellites [U]

        NT3 Moon [U]

    NT2 Sun [U]

        NT3 Solar activity [U]

NT1 Stars [U]

RT Astronomical observatories [U]

RT Astronomy [U]

UF Celestial bodies

Astronomy [U]

NT1 Astrophysics [U]

NT1 Cosmology [U]

RT Artificial satellites [U]

RT Astronomical observatories [U]

RT Astronomical systems [U]

RT Geodesy [U]

RT Space sciences [U]

Space sciences [U]

RT Astronomy [U]

RT Astrophysics [U]

RT Cosmology [U]

RT Space technology [U]

Time [U]

RT Calendars [U]

RT Chronology [U]