
mod
Create CosmonauticsMinecraft mod for 1.21.1
Fulfill your childhood dream by exploring space!
- Latest version
- 26.07.289
- Minecraft
- 1.21.1
- Java
- Java 21+
- Loader
- NeoForge
- Licence
- GPL-3.0-or-later
- Downloads
- 41.0k
- Updated
- 1 mo ago
- Available on
- Modrinth
Host Create Cosmonautics servers
One click and Create Cosmonautics is installed with the right loader, on hardware built for it.
- 1.21.1
- NeoForge
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version Create Cosmonautics declares support for, newest first, with the Java runtime that version needs.
Download
From Create Cosmonautics’s own host. Nothing is re-hosted here.
cosmonautics-26.07.289.jar · 21.4 MB · for 1.21.1
d3a3e84d2b38…Older versions5Hide older versions
- 26.07.27219 Jul 20261.21.111.8 MB3.9k downloads
3a20a17956e9…Get - 26.07.27117 Jul 20261.21.111.8 MB1.3k downloads
90a8bec0a9ab…Get - 26.07.27017 Jul 20261.21.111.8 MB153 downloads
73f58f4b97c8…Get - 1.4.0rc123 Jun 20261.21.111.7 MB1.0k downloads
c0faae16ac8e…Get - 1.3.8-rc.85 Jun 20261.21.111.4 MB87 downloads
7e0d28bb1293…Get
Frequently asked
Does Create Cosmonautics work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version Create Cosmonautics declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Do I need to install Create Cosmonautics on the client or the server?
Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.
Which platform or loader does Create Cosmonautics support?
NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Create Cosmonautics?
On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.
What licence is Create Cosmonautics under?
GPL-3.0-or-later, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Create Cosmonautics?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Create Cosmonautics safely?
Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .

