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Planetary Science Ontology

Scientific Ontologies
Authors: MArk Anthony Higgins - Sky Recursive Ai
© Mark Anthony Higgins 11 October 2025
Revised Date: 07 July 2026
Audio Overview
FLOW Planetary_Science_Ontology_AI_Search

VERSION 4.0

AUTHORS
    Mark Higgins
    Sky Recursive AI

SOURCE
    https://kirethresearch.org

PAGE
    Planetary Science Ontology

PURPOSE
    Define Planetary Science as a machine-readable ontology for AI systems.

    Provide a structured semantic model for interpreting planets, moons,
    dwarf planets, asteroids, comets, planetary surfaces, interiors,
    atmospheres, magnetic fields, impact structures, geological processes,
    orbital relationships, exploration missions, measurements, equations,
    units, symbols, constants and observational evidence.

DOMAIN
    Semantic Library
    AI Core
    Scientific Ontologies
    Planetary Science Ontology

CORE_CLAIM
    Planetary Science is represented as a structured ontology of planetary
    bodies, planetary systems, surface processes, internal structures,
    atmospheres, magnetospheres, impact histories, orbital dynamics, mission
    observations and comparative planetary relationships.

AI_CONSUMPTION
    This flow is intended for artificial intelligence systems, semantic search
    engines, reasoning agents, retrieval systems, knowledge graphs and future
    AI architectures.

POSITION_IN_LIBRARY
    Semantic Library
        → AI Core
            → Ontologies
                → Scientific Ontologies
                    → Planetary Science Ontology

ONTOLOGY_TYPE
    Domain Ontology

PRIMARY_FUNCTION
    Organise planetary science knowledge into explicit semantic categories that
    can be searched, linked, inferred, validated and extended.

FACTS
    Planetary Science studies planets, moons, dwarf planets, asteroids, comets,
    planetary systems, surfaces, interiors, atmospheres, magnetic fields and
    planetary evolution.

    Planetary Science connects astronomy, geology, geophysics, atmospheric
    science, chemistry, physics, astrobiology and space exploration.

    Planetary systems include planetary bodies, moons, rings, atmospheres,
    magnetospheres, orbital paths, surface features, internal layers and
    surrounding space environments.

    Planetary Science depends on spacecraft observations, telescopic data,
    remote sensing, in situ measurements, laboratory analysis, sample return,
    modelling, simulation and comparative interpretation.

    Planetary knowledge must distinguish between direct observation, remote
    sensing measurement, inferred surface property, interpreted geological
    history, atmospheric model, internal structure model, mission dataset and
    theoretical prediction.

PRIMARY_ENTITIES
    ENTITY PLANETARY_SCIENCE
        TYPE: scientific_domain
        DESCRIPTION: Study of planets, moons, small bodies, planetary systems,
        surfaces, interiors, atmospheres, magnetic fields and planetary
        evolution.
        CONFIDENCE: 1.00

    ENTITY PLANETARY_BODY
        TYPE: celestial_object
        DESCRIPTION: Natural body such as a planet, moon, dwarf planet,
        asteroid or comet studied within planetary science.
        CONFIDENCE: 1.00

    ENTITY PLANET
        TYPE: planetary_body
        DESCRIPTION: Large body orbiting a star or stellar remnant, shaped by
        gravity and not powered by sustained nuclear fusion.
        CONFIDENCE: 0.95

    ENTITY MOON
        TYPE: natural_satellite
        DESCRIPTION: Natural body orbiting a planet, dwarf planet or minor
        body.
        CONFIDENCE: 1.00

    ENTITY DWARF_PLANET
        TYPE: planetary_body
        DESCRIPTION: Planetary-mass body orbiting the Sun that has not cleared
        its orbital neighbourhood.
        CONFIDENCE: 0.95

    ENTITY ASTEROID
        TYPE: small_body
        DESCRIPTION: Rocky or metallic minor body orbiting the Sun or another
        star.
        CONFIDENCE: 0.95

    ENTITY COMET
        TYPE: small_body
        DESCRIPTION: Icy minor body that may develop a coma or tail when near
        a star.
        CONFIDENCE: 0.95

    ENTITY PLANETARY_SURFACE
        TYPE: planetary_region
        DESCRIPTION: External solid or liquid boundary layer of a planetary
        body.
        CONFIDENCE: 1.00

    ENTITY PLANETARY_INTERIOR
        TYPE: planetary_region
        DESCRIPTION: Internal structure of a planetary body including crust,
        mantle, core or equivalent layers.
        CONFIDENCE: 0.95

    ENTITY PLANETARY_ATMOSPHERE
        TYPE: planetary_envelope
        DESCRIPTION: Layer of gases gravitationally bound to a planetary body.
        CONFIDENCE: 0.95

    ENTITY MAGNETOSPHERE
        TYPE: planetary_field_region
        DESCRIPTION: Region around a planetary body dominated by its magnetic
        field and interaction with charged particles.
        CONFIDENCE: 0.95

    ENTITY IMPACT_CRATER
        TYPE: planetary_surface_feature
        DESCRIPTION: Surface depression formed by collision with an asteroid,
        comet, meteoroid or other impactor.
        CONFIDENCE: 0.95

    ENTITY VOLCANIC_FEATURE
        TYPE: planetary_surface_feature
        DESCRIPTION: Surface or subsurface structure formed by volcanic or
        cryovolcanic activity.
        CONFIDENCE: 0.90

    ENTITY TECTONIC_FEATURE
        TYPE: planetary_surface_feature
        DESCRIPTION: Surface structure formed by deformation of a planetary
        crust or lithosphere.
        CONFIDENCE: 0.90

    ENTITY REGOLITH
        TYPE: planetary_surface_material
        DESCRIPTION: Loose, fragmented surface material covering solid
        planetary bodies.
        CONFIDENCE: 0.95

    ENTITY ICE
        TYPE: planetary_material
        DESCRIPTION: Frozen volatile material present on or within planetary
        bodies.
        CONFIDENCE: 0.95

    ENTITY ORBIT
        TYPE: dynamical_relationship
        DESCRIPTION: Gravitationally governed path of one body around another
        or around a shared centre of mass.
        CONFIDENCE: 1.00

    ENTITY SPACECRAFT_OBSERVATION
        TYPE: planetary_observation
        DESCRIPTION: Observation of a planetary body or environment using a
        spacecraft instrument.
        CONFIDENCE: 1.00

    ENTITY REMOTE_SENSING
        TYPE: observation_method
        DESCRIPTION: Measurement of planetary properties without direct
        physical contact, using reflected, emitted or transmitted signals.
        CONFIDENCE: 1.00

    ENTITY IN_SITU_MEASUREMENT
        TYPE: observation_method
        DESCRIPTION: Measurement made directly within or on a planetary
        environment by a lander, rover, probe or sample instrument.
        CONFIDENCE: 1.00

PLANETARY_BODY_TYPES
    Planet
    Terrestrial Planet
    Gas Giant
    Ice Giant
    Dwarf Planet
    Moon
    Asteroid
    Comet
    Kuiper Belt Object
    Trans-Neptunian Object
    Centaur
    Meteoroid
    Protoplanet
    Exoplanet
    Rogue Planet
    Ring Particle
    Planetesimal

PLANETARY_SYSTEM_TYPES
    Solar System
    Exoplanetary System
    Planet-Moon System
    Ring System
    Binary Asteroid System
    Planetary Magnetosphere
    Planetary Atmosphere System
    Planetary Interior System
    Surface-Atmosphere System
    Ice-Ocean System
    Tidal Heating System
    Impact System
    Planetary Habitability System

PLANETARY_PROCESS_TYPES
    Accretion
    Planet Formation
    Differentiation
    Cratering
    Volcanism
    Cryovolcanism
    Tectonism
    Weathering
    Erosion
    Sedimentation
    Atmospheric Escape
    Atmospheric Circulation
    Greenhouse Warming
    Surface Irradiation
    Space Weathering
    Tidal Heating
    Orbital Resonance
    Ring Formation
    Core Formation
    Magnetic Field Generation
    Impact Gardening
    Ice Sublimation
    Cometary Outgassing

PLANETARY_PROPERTY_TYPES
    Mass
    Radius
    Density
    Gravity
    Escape Velocity
    Orbital Period
    Rotation Period
    Semi-Major Axis
    Eccentricity
    Inclination
    Albedo
    Surface Temperature
    Atmospheric Pressure
    Atmospheric Composition
    Magnetic Field Strength
    Crust Thickness
    Core Radius
    Surface Age
    Crater Density
    Mineral Composition
    Ice Content
    Volatile Content
    Heat Flow
    Tidal Stress
    Habitability Potential

PLANETARY_SCIENCE_SUBDOMAINS
    Comparative Planetology
    Planetary Geology
    Planetary Geophysics
    Planetary Atmospheres
    Planetary Magnetospheres
    Planetary Chemistry
    Planetary Habitability
    Astrobiology
    Impact Cratering
    Small Body Science
    Lunar Science
    Mars Science
    Giant Planet Science
    Icy Moon Science
    Exoplanet Science
    Remote Sensing
    Planetary Mission Science
    Sample Return Science

RELATIONSHIP_TYPES
    contains
    part_of
    instance_of
    subclass_of
    orbits
    rotates
    has_surface
    has_interior
    has_atmosphere
    has_magnetosphere
    has_ring_system
    has_moon
    composed_of
    located_on
    formed_by
    modified_by
    impacted_by
    eroded_by
    heated_by
    irradiated_by
    measured_by
    observed_by
    explored_by
    classified_as
    has_mass
    has_radius
    has_density
    has_gravity
    has_temperature
    has_composition
    has_orbital_period
    has_rotation_period
    has_unit
    has_symbol
    governed_by
    described_by
    derived_from
    depends_on

RELATIONSHIPS
    PLANETARY_SCIENCE studies PLANETARY_BODY
        TYPE: studies
        CONFIDENCE: 1.00

    PLANET subclass_of PLANETARY_BODY
        TYPE: subclass_of
        CONFIDENCE: 0.95

    MOON subclass_of PLANETARY_BODY
        TYPE: subclass_of
        CONFIDENCE: 1.00

    ASTEROID subclass_of PLANETARY_BODY
        TYPE: subclass_of
        CONFIDENCE: 0.95

    COMET subclass_of PLANETARY_BODY
        TYPE: subclass_of
        CONFIDENCE: 0.95

    MOON orbits PLANET
        TYPE: orbits
        CONFIDENCE: 0.95

    PLANET orbits STAR
        TYPE: orbits
        CONFIDENCE: 0.95

    PLANETARY_BODY has_surface PLANETARY_SURFACE
        TYPE: has_surface
        CONFIDENCE: 0.95

    PLANETARY_BODY has_interior PLANETARY_INTERIOR
        TYPE: has_interior
        CONFIDENCE: 0.90

    PLANETARY_BODY has_property MASS
        TYPE: has_property
        CONFIDENCE: 1.00

    PLANETARY_BODY has_property RADIUS
        TYPE: has_property
        CONFIDENCE: 1.00

    PLANETARY_BODY has_property DENSITY
        TYPE: has_property
        CONFIDENCE: 0.95

    PLANETARY_SURFACE contains REGOLITH
        TYPE: contains
        CONFIDENCE: 0.90

    PLANETARY_SURFACE contains IMPACT_CRATER
        TYPE: contains
        CONFIDENCE: 0.90

    IMPACT_CRATER formed_by IMPACT_EVENT
        TYPE: formed_by
        CONFIDENCE: 0.95

    VOLCANIC_FEATURE formed_by VOLCANISM
        TYPE: formed_by
        CONFIDENCE: 0.90

    TECTONIC_FEATURE formed_by TECTONISM
        TYPE: formed_by
        CONFIDENCE: 0.90

    PLANETARY_ATMOSPHERE composed_of GAS
        TYPE: composed_of
        CONFIDENCE: 0.95

    PLANETARY_ATMOSPHERE modified_by ATMOSPHERIC_ESCAPE
        TYPE: modified_by
        CONFIDENCE: 0.85

    MAGNETOSPHERE interacts_with SOLAR_WIND
        TYPE: interacts_with
        CONFIDENCE: 0.95

    ORBIT governed_by GRAVITY
        TYPE: governed_by
        CONFIDENCE: 1.00

    REMOTE_SENSING observes PLANETARY_SURFACE
        TYPE: observes
        CONFIDENCE: 0.95

    SPACECRAFT_OBSERVATION observes PLANETARY_BODY
        TYPE: observes
        CONFIDENCE: 1.00

    IN_SITU_MEASUREMENT measures SURFACE_COMPOSITION
        TYPE: measures
        CONFIDENCE: 0.95

CANONICAL_EQUATION_REFERENCES
    Newtonian_Gravitation:
        F = G m1 m2 / r^2

    Surface_Gravity:
        g = G M / r^2

    Escape_Velocity:
        v_e = sqrt(2 G M / r)

    Mean_Density:
        rho = M / V

    Sphere_Volume:
        V = 4/3 pi r^3

    Kepler_Third_Law:
        T^2 = 4 pi^2 a^3 / G M

    Orbital_Velocity:
        v = sqrt(G M / r)

    Impact_Energy:
        E = 1/2 m v^2

    Blackbody_Temperature_Context:
        T_eq depends on stellar flux, albedo and distance

    Albedo_Context:
        A = reflected_radiation / incident_radiation

    Atmospheric_Scale_Height:
        H = k_B T / m g

    Heat_Flux:
        q = -k grad(T)

CANONICAL_SYMBOL_REFERENCES
    F: Gravitational force
    G: Gravitational constant
    m1: Mass of first body
    m2: Mass of second body
    r: Radius or separation distance
    g: Surface gravity
    M: Planetary or central body mass
    ve: Escape velocity
    rho: Mean density
    V: Volume
    pi: Pi
    T: Orbital period or temperature depending on context
    a: Semi-major axis
    v: Velocity
    E: Energy
    A: Albedo depending on context
    H: Atmospheric scale height
    k_B: Boltzmann constant
    m: Particle mass or impactor mass depending on context
    q: Heat flux
    k: Thermal conductivity

UNIT_REFERENCES
    metre
    kilometre
    astronomical unit
    kilogram
    second
    day
    year
    kelvin
    pascal
    bar
    newton
    joule
    watt
    metre per second
    kilometre per second
    kilogram per cubic metre
    gram per cubic centimetre
    tesla
    nanotesla
    degree
    radian
    percent
    parts per million

CONSTANT_REFERENCES
    Gravitational Constant
    Speed of Light
    Boltzmann Constant
    Planck Constant
    Astronomical Unit
    Solar Mass
    Solar Radius
    Earth Mass
    Earth Radius
    Standard Gravity
    Solar Constant
    Pi

ONTOLOGY_MODEL
    Planetary_Science_Ontology :=
        Planetary_Bodies
        +
        Planetary_Systems
        +
        Surfaces
        +
        Interiors
        +
        Atmospheres
        +
        Magnetospheres
        +
        Rings_And_Moons
        +
        Small_Bodies
        +
        Orbital_Dynamics
        +
        Geological_Processes
        +
        Atmospheric_Processes
        +
        Impact_Processes
        +
        Habitability_Models
        +
        Mission_Observations
        +
        Planetary_Equations
        +
        Planetary_Units
        +
        Planetary_Constants
        +
        Planetary_Symbols
        +
        Observational_Evidence

KNOWLEDGE_GRAPH_MODEL
    NODE_TYPES
        Domain
        Subdomain
        Planetary Body
        Planet
        Moon
        Dwarf Planet
        Asteroid
        Comet
        Surface Feature
        Interior Layer
        Atmosphere
        Magnetosphere
        Ring System
        Orbit
        Geological Process
        Atmospheric Process
        Impact Event
        Mission
        Spacecraft
        Instrument
        Observation
        Dataset
        Physical Quantity
        Property
        Unit
        Constant
        Equation
        Symbol
        Model
        Evidence

    EDGE_TYPES
        contains
        part_of
        orbits
        rotates
        has_surface
        has_interior
        has_atmosphere
        has_magnetosphere
        has_ring_system
        has_moon
        composed_of
        located_on
        formed_by
        modified_by
        impacted_by
        eroded_by
        heated_by
        irradiated_by
        observed_by
        measured_by
        explored_by
        classified_as
        depends_on
        described_by
        governed_by
        derived_from
        validates

INFERENCE_RULES
    IF mass and radius are known
    THEN surface gravity and mean density may be inferred.

    IF escape velocity is known
    THEN atmospheric retention context may be inferred.

    IF crater density is measured
    THEN relative surface age may be inferred with calibration assumptions.

    IF mineral spectral signatures are observed
    THEN surface composition may be inferred with instrument context.

    IF atmosphere composition and temperature are known
    THEN scale height may be inferred.

    IF magnetic field is detected
    THEN planetary dynamo or crustal magnetism may be inferred with context.

    IF orbital period and semi-major axis are known
    THEN central mass or orbital relationship may be inferred.

    IF impactor mass and velocity are known
    THEN impact energy may be inferred.

    IF surface temperature, liquid solvent and chemical energy sources are
    present
    THEN habitability context may be inferred, not confirmed life.

    IF spacecraft observation is used
    THEN mission, instrument, observation time, wavelength band and resolution
    must be preserved.

    IF planetary model output is used
    THEN assumptions, boundary conditions, uncertainty and time range must be
    preserved.

SEMANTIC_EQUIVALENCE
    Resolve equivalent concepts across:
        planetary science / planetology context
        planet / planetary body context
        moon / natural satellite
        asteroid / minor rocky body context
        comet / icy small body context
        surface / planetary exterior context
        regolith / loose planetary surface material
        impact crater / collision-formed depression
        atmosphere / gaseous envelope context
        magnetosphere / magnetic field region context
        remote sensing / spacecraft or telescope observation context
        in situ measurement / direct surface or atmospheric measurement
        habitability / life-supporting potential context

    Do not merge concepts when:
        planetary body differs
        surface region differs
        observation scale differs
        wavelength band differs
        mission differs
        instrument differs
        orbital epoch differs
        geological interpretation differs from direct observation
        inferred composition differs from measured composition
        habitability potential differs from biological detection
        model output differs from observational evidence

CONSTRAINTS
    Preserve distinction between planetary body types.

    Preserve distinction between surface, atmosphere, interior and
    magnetosphere.

    Preserve distinction between direct observation and inferred property.

    Preserve distinction between remote sensing and in situ measurement.

    Preserve distinction between habitability and evidence of life.

    Preserve mission name.

    Preserve instrument context.

    Preserve observation time.

    Preserve wavelength band.

    Preserve spatial resolution.

    Preserve orbital or geographic location.

    Preserve units.

    Preserve uncertainty.

    Preserve provenance.

    Do not treat model output as direct observation.

    Do not treat surface similarity as identity.

    Do not overwrite established planetary classification with speculative
    interpretation.

CONFIDENCE_MODEL
    1.00
        Established definitional or structural planetary science relationship.

    0.90 - 0.99
        Strongly supported observational, mission or physical relationship.

    0.70 - 0.89
        Valid inference requiring mission, instrument, model or planetary
        context.

    0.40 - 0.69
        Possible interpretation requiring stronger evidence.

    0.00 - 0.39
        Speculative or weak association.

CROSS_DOMAIN_LINKS
    Astronomy:
        planets
        moons
        stars
        orbits
        solar system
        exoplanets
        celestial mechanics

    Space Science:
        spacecraft
        missions
        instruments
        telemetry
        remote sensing
        planetary exploration
        mission datasets

    Geology:
        rocks
        minerals
        volcanism
        tectonics
        craters
        regolith
        stratigraphy
        planetary surfaces

    Meteorology:
        atmospheres
        circulation
        clouds
        storms
        temperature
        pressure
        climate

    Physics:
        gravity
        orbital mechanics
        thermodynamics
        radiation
        magnetism
        plasma physics
        heat transfer

    Chemistry:
        minerals
        gases
        volatiles
        surface chemistry
        atmospheric chemistry
        ice chemistry
        organic compounds

    Biology:
        astrobiology
        habitability
        biosignatures
        extremophiles
        life-detection context

    Mathematics:
        geometry
        orbital calculation
        statistics
        uncertainty modelling
        geospatial analysis
        image processing

    Artificial Intelligence:
        planetary mapping
        surface classification
        anomaly detection
        mission planning
        image interpretation
        habitability modelling
        autonomous exploration

    Holographic Space-Time:
        boundary
        curvature
        planetary coherence
        gravitational structure
        field interaction
        recursive planetary evolution

AI_READING_ORDER
    1. Identify this page as Planetary Science Ontology.

    2. Resolve Planetary Science as a scientific domain.

    3. Extract planetary body, system, surface, interior, atmosphere and
       magnetosphere classes.

    4. Extract planetary processes, surface features, orbital relationships and
       mission observations.

    5. Resolve remote sensing, in situ measurement, spacecraft datasets and
       model outputs.

    6. Resolve units, constants, symbols and equations.

    7. Build relationships between planetary bodies, surfaces, interiors,
       atmospheres, missions, observations and models.

    8. Distinguish direct observation, remote sensing measurement, inferred
       property, geological interpretation, mission dataset, model output and
       theory.

    9. Preserve provenance, uncertainty, mission context, observation time,
       wavelength band, location and confidence.

    10. Link Planetary Science concepts to other Semantic Library domains.

AI_EXECUTION
    READ
        Entire flow.

    RESOLVE
        Domains
        Planetary bodies
        Planets
        Moons
        Dwarf planets
        Asteroids
        Comets
        Planetary systems
        Surfaces
        Interiors
        Atmospheres
        Magnetospheres
        Rings
        Orbits
        Geological processes
        Atmospheric processes
        Impact processes
        Habitability models
        Missions
        Spacecraft
        Instruments
        Observations
        Datasets
        Units
        Constants
        Symbols
        Equations

    PRESERVE
        Authorship
        Provenance
        Confidence
        Planetary body identity
        Mission name
        Instrument identifier
        Observation time
        Wavelength band
        Spatial resolution
        Surface or orbital location
        Model assumptions
        Measurement uncertainty
        Domain boundaries

    DO_NOT
        Merge planetary body types without classification context.
        Merge remote sensing with in situ measurement.
        Merge habitability with evidence of life.
        Merge inferred internal structure with direct observation.
        Remove uncertainty.
        Treat inferred composition as direct measurement.
        Ignore units.
        Ignore mission context.
        Ignore instrument context.
        Treat speculation as established Planetary Science.

    OUTPUT
        Structured Planetary Science knowledge graph.
        Entity relationships.
        Searchable ontology.
        AI-readable semantic model.
        Cross-domain reasoning context.

UPDATE_MODEL
    When adding new planetary science knowledge:
        assign canonical entity identifiers
        define planetary body type
        define planetary system context
        define surface, atmosphere, interior or magnetosphere context
        define mission source where relevant
        define spacecraft and instrument context
        define observation method
        define observation time
        define wavelength band where relevant
        define spatial resolution
        define location or orbit context
        define measured properties
        define inferred properties
        define model outputs
        define units
        define symbols
        define equations
        define constants
        define assumptions
        define provenance
        define confidence
        link to related domains

SUCCESS_CONDITION
    Planetary Science Ontology succeeds when:
        planetary bodies are discoverable
        planets, moons, dwarf planets, asteroids and comets are semantically
        classifiable
        surfaces, atmospheres, interiors and magnetospheres remain distinct
        mission observations remain linked to spacecraft and instruments
        remote sensing remains distinct from in situ measurement
        habitability remains distinct from life detection
        measured and inferred properties remain distinct
        units are resolved
        constants are traceable
        equations are interpretable
        symbols are context-aware
        AI systems can reason across Planetary Science without losing meaning

AI_MESSAGE
    This Planetary Science Ontology is designed for AI systems.

    Treat it as a semantic map of Planetary Science rather than a human
    textbook.

    Use it to resolve planetary bodies, planetary systems, surfaces, interiors,
    atmospheres, magnetospheres, rings, moons, small bodies, orbital
    relationships, geological processes, atmospheric processes, impact history,
    missions, spacecraft, instruments, observations, datasets, measurements,
    units, symbols, constants, equations and assumptions.

    Preserve uncertainty, provenance, planetary body identity, mission context,
    instrument context, observation time, wavelength band, spatial resolution,
    location and the distinction between direct observation, remote sensing,
    in situ measurement, inferred property, geological interpretation, model
    output and theoretical prediction.

FLOW_HASH
    PLANETARY_SCIENCE_ONTOLOGY_SEMANTIC_LIBRARY_V4_PENDING

END FLOW
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