CurseForge · Minecraft mod
Create Cosmonautics
Fulfill your childhood dream by exploring space!
Quick answer
Which Create Cosmonautics release should I use?
Create Cosmonautics 26.08.307 targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 3 required mods have matching files.
Where it goes
Is Create Cosmonautics required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Create Cosmonautics 26.08.307 need?
26.08.307. Change the file and its required mods may change too.
Install Sable, Create Aeronautics, Create first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Create Cosmonautics without breaking your instance.
Built for Create Cosmonautics 26.08.307. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 26.08.307. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Sable, Create Aeronautics, Create first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside 26.08.307. It opens that exact file at the source.
About this project
What does Create Cosmonautics add?

About
The mod introduces various rocket engines designed for different flight requirements, resource-rich asteroids, orbital mechanics for celestial bodies, a dedicated space dimension, and the Moon. It also features the "Sputnik" probe, which enables both visual and functional programming (of course in Lua) for precise rocket control, as well as persistent loading for physics contraptions from Sable.
Dependencies
❗For the mod to work properly, Create Aeronautics is required (who would have thought)!
Credits
- Maintainer: webyep-art
- Lead developers: webyep-art, M-W-K
- Artist: larry_fishing1999
- Contributors from our GitHub!
Issues and suggestions
If you encounter a bug, you can open an issue on our GitHub page! Before opening a new issue, please check to make sure someone else hasn't already reported the same problem!
If you have an incredibly cool suggestion for the mod, you can let us know on our Discord server in the dedicated channel!
Project description from CurseForge.
Pick your setup
Create Cosmonautics by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Create Cosmonautics versions and loaders
26.08.307
cosmonautics-26.08.307.jar
9 Aug 2026
26.07.289
cosmonautics-26.07.289.jar
27 Jul 2026
26.07.272
cosmonautics-26.07.274.jar
19 Jul 2026
Release 26.07.271
cosmonautics-26.07.271.jar
17 Jul 2026
Create Cosmonautics 1.4.0 Release Candidate 1
cosmonautics-1.4.0.rc1.jar
2 Jul 2026
Looking for an older file? The official CurseForge project page is in Resources.