Create Cosmonautics

Create Cosmonautics

Fulfill your childhood dream by exploring space!

by
98.7K Downloads
neoforgeadventuregame-mechanicsworldgen
Rent Server with this Mod

Screenshots

Some cool effect
Starry cosmic sky!
Flame merging
Hologram Table UI

About this Mod

Create Cosmonautics Title logo

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!

Available Versions

26.08.307beta
MC 1.21.1neoforge
August 9, 2026
26.08.292beta
MC 1.21.1neoforge
August 2, 2026
26.08.291beta
MC 1.21.1neoforge
August 1, 2026
26.07.289beta
MC 1.21.1neoforge
July 27, 2026
26.07.272beta
MC 1.21.1neoforge
July 19, 2026

How to Install Create Cosmonautics on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

3

Install Mod

Open the mod browser in the dashboard and search for "Create Cosmonautics". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Create Cosmonautics server crashes on startup – what to do?

Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Create Cosmonautics compatible with neoforge?

Create Cosmonautics officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Create Cosmonautics – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Create Cosmonautics consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Create Cosmonautics with just one click on your server.

Recommended RAM
6 GBfrom €7.800000000000001/mo
Minimum 4 GB | per 5 players
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU General Public License v3.0 or later
Server-side
Required

Supported Versions

1.21.1