vocabulary:
  provider: TheSpaceDevs Launch Library 2
  description: >-
    Vocabulary and taxonomy for TheSpaceDevs Launch Library 2 API,
    covering rocket launches, spacecraft, astronauts, space stations,
    orbital mechanics, and the global space launch industry.
  terms:
    - term: Launch Library 2 (LL2)
      definition: >-
        The official successor to the Launch Library API, maintained by
        TheSpaceDevs community. Provides comprehensive data on rocket
        launches, space events, and crewed spaceflight missions.
      tags:
        - Core Concept
        - API

    - term: NET (No Earlier Than)
      definition: >-
        The earliest possible launch date and time. Used when the exact
        launch window has not been confirmed. Expressed as UTC datetime.
      tags:
        - Launch Timing
        - Core Concept

    - term: Launch Status
      definition: >-
        The current go/no-go state of a launch.
      tags:
        - Status
        - Launch
      values:
        - "Go (1)": Launch is confirmed and on schedule.
        - "TBD (2)": To Be Determined — date not set.
        - "Success (3)": Launch completed successfully.
        - "Failure (4)": Launch ended in failure.
        - "Hold (5)": Launch is on hold.
        - "In Flight (6)": Vehicle is currently airborne.
        - "Partial Failure (7)": Launch partially succeeded.
        - "TBC (8)": To Be Confirmed — tentative date.

    - term: Launch Window
      definition: >-
        The time period during which a launch can occur, bounded by
        window_start and window_end. Determined by orbital mechanics,
        range safety, and vehicle constraints.
      tags:
        - Launch Timing

    - term: Launch Service Provider
      definition: >-
        The organization responsible for executing the launch (e.g., SpaceX,
        Roscosmos, ISRO, ULA). Distinct from the mission owner.
      tags:
        - Agency
        - Organization

    - term: Launch Pad
      definition: >-
        The physical launch facility (pad) from which a rocket launches.
        Associated with a geographic location and launch provider.
      tags:
        - Infrastructure
        - Location

    - term: Launcher Configuration
      definition: >-
        The specific variant of a rocket vehicle (e.g., Falcon 9 Block 5,
        Atlas V 551, Ariane 5 ECA). Each configuration has its own
        performance, physical characteristics, and success record.
      tags:
        - Vehicle
        - Technical

    - term: Prime Mover (Space Context)
      definition: >-
        Not applicable to rocketry. In LL2 context, the launch vehicle
        is described by its configuration and family.
      tags:
        - Disambiguation

    - term: Orbit
      definition: >-
        The orbital regime a payload is delivered to (e.g., LEO, GEO, SSO, TLI).
      tags:
        - Orbital Mechanics
      values:
        - LEO: Low Earth Orbit (160-2000 km)
        - GEO: Geostationary Earth Orbit (~35,786 km)
        - MEO: Medium Earth Orbit (2000-35,786 km)
        - SSO: Sun-Synchronous Orbit
        - TLI: Trans-Lunar Injection
        - HEO: Highly Elliptical Orbit
        - ISS: International Space Station orbit

    - term: EVA (Extravehicular Activity)
      definition: >-
        A spacewalk — an excursion by an astronaut outside a spacecraft or
        space station. Tracked in LL2 as a spacewalk record.
      tags:
        - Spacewalk
        - Crewed Spaceflight

    - term: Expedition
      definition: >-
        A crewed mission assignment period aboard a space station. ISS
        expeditions are numbered sequentially (e.g., Expedition 70).
      tags:
        - Space Station
        - Crewed Spaceflight

    - term: Docking Event
      definition: >-
        The physical connection of a spacecraft to a docking port on a
        space station or another spacecraft.
      tags:
        - Spacecraft Operations

    - term: Mode
      definition: >-
        LL2 API parameter controlling response detail level.
      tags:
        - API Parameter
      values:
        - list: Minimal fields (id, name, status, net).
        - normal: Standard fields (default).
        - detailed: Full data including all related objects.

  domains:
    - name: Launch Operations
      description: Rocket launch events and scheduling.
      concepts:
        - Launch
        - NET
        - Launch Window
        - Launch Status
        - Launch Pad
        - Launch Service Provider

    - name: Vehicles
      description: Rocket vehicles and configurations.
      concepts:
        - Launcher Configuration
        - Launcher Configuration Family
        - First Stage
        - Booster

    - name: Crewed Spaceflight
      description: Human spaceflight missions and activities.
      concepts:
        - Astronaut
        - Spacecraft Flight
        - Expedition
        - EVA
        - Spacewalk
        - Docking Event

    - name: Space Infrastructure
      description: Orbital and surface space assets.
      concepts:
        - Space Station
        - Spacecraft
        - Launch Pad
        - Location

    - name: Mission Data
      description: Payload and mission classification.
      concepts:
        - Mission
        - Orbit
        - Payload
        - Mission Type
        - Program