Celestial Lib
by shimaginary
Celestial Lib is a Forge library for 1.18.2 that provides shared code for space exploration mods, including planets, galaxies and travel between them.
What it does
Celestial Lib is written for mod authors who build space exploration content. It groups systems that such mods need, such as planets set up as separate dimensions, galaxies that hold several planets, and teleportation to and from those planets. Celestial Exploration requires it, and the library was extracted from the beta versions of that mod.
Authors can use the library to add planets through datapacks, set up gravity effects for each world, and implement spacesuits or armor that negate the effects a player wears them against. It also covers light speed travel between galaxies, which is meant for modpacks that combine several galaxies. Installation applies to both sides: the server and every player need the library on Forge 1.18.2.
Key features
Planets as dimensions
Each planet can be assigned its own dimension, and structures can be built to represent it in the world.
Galaxies and teleportation
Planets are grouped into galaxies, and players can be teleported to and from them.
Gravity and suit effects
Per-world gravity can be configured, and spacesuits or armor can be defined to cancel the effects worn against them.
Datapack planets
Additional planets can be added through datapacks without changing the code of the library.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Required by 1 mod
Use cases
Building a space mod
Mod authors can use the library's planet and galaxy systems as the base for their own space content.
Modpacks with several galaxies
Light speed travel between galaxies lets a modpack connect several galaxies into one progression.
Who it’s for: Mod authors who build space exploration content for Forge 1.18.2, and modpack makers who want several galaxies connected by travel.
Questions
Does Celestial Lib need to be installed on the server?
Which mod requires Celestial Lib?
Can new planets be added without writing code?
In the catalog
Celestial Lib is one of 3,514 Library mods on ModsFinder, and one of 1,576 Library mods for Forge. 9,044 mods support Minecraft 1.18.2.
More from shimaginary
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What the author says
A library mod for space exploration mods. Extracted from beta versions of Celestial Exploration, now into its own library!
Official listing
- Modrinth page
- modrinth.com/mod/celestial-lib
- Owner
- shimaginary
- Published
- 2025-09-02
- Updated on Modrinth
- 2026-08-10
- Facts verified
- 2026-10-15