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Adding your own universe with Cosmonautics

The Cosmonautics universe is loaded dynamically from JSON files at runtime, allowing it to be modified using datapacks instead of through an addon mod. Familiarity with datapacks is recommended. Introductory guides to datapacks are commonly available across the internet.

The pages below detail how to customize the universe components currently supported by Cosmonautics:

• Cube Planets
• Celestial Positions
• Celestial Rotations
• Common Types
• Cube Planets
• Texture Definition

External APIs & Telemetry

• Telemetry & Ephemeris HTTP API — Built-in HTTP REST API streaming real-time planetary ephemerides, celestial mechanics, orbits, and spacecraft telemetry as JSON.

Peripherals and Programming

• Peripherals — Sputnik block telemetry, ComputerCraft integration, and local Lua script API.