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CosmosMinecraft mod for 26.3

A highly configurable mod for better stars and night sky!

client onlynewest supported release 26.3AdventureGame MechanicsDecoration
Latest version
1.0.3-26.3
Minecraft
1.21.8 to 26.3
Java
Java 25+
Loader
Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
15.9k
Updated
1 mo ago
Available on
Modrinth

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Cosmos declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
26.3Fabric25+declared15 Sept 2026
26.2Fabric25+declared16 Jun 2026
26.1.2Fabric25+declared9 Apr 2026
26.1.1Fabric25+declared1 Apr 2026
26.1Fabric25+declared24 Mar 2026
1.21.11Fabric21+declared9 Dec 2025
1.21.10Fabric21+declared7 Oct 2025
1.21.9Fabric21+declared30 Sept 2025
1.21.8Fabric21+declared17 Jul 2025

Download

From Cosmos’s own host. Nothing is re-hosted here.

Most recently published release

1.0.3-26.3release23 Sept 2026

cosmos-1.0.3-26.3.jar · 14 KB · for 26.3 · Fabric

Download this release
3dcc0319a71b…
Older versions8
  • 1.0.3-26.1.217 Jul 202626.1.2, 26.1.1, 26.120 KB164 downloads5709b8a047ca…Get
  • 1.0.3-26.213 Jul 202626.220 KB967 downloadsffe190564c3d…Get
  • 1.0.2-26.212 Jul 202626.220 KB77 downloads610ddf5f78cf…Get
  • 1.0.1-26.212 Jul 202626.220 KB4 downloads9ec44bacf57d…Get
  • 1.0.0-26.26 Jul 202626.219 KB303 downloads02ec32df74df…Get
  • 1.0.0-1.21.1110 Dec 20251.21.1168 KB4.2k downloadsae649b7c2f5f…Get
  • 1.0.0-1.21.1014 Oct 20251.21.10, 1.21.9, 1.21.872 KB3.1k downloadsd2b7a9cfec4f…Get
  • 1.0.0-1.21.85 Sept 20251.21.872 KB624 downloadsbbed37985971…Get

Dependencies

What Cosmosdeclares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

Fabric APIRequired. Lightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.MidnightLibRequired. Common library providing a lightweight configuration system

Frequently asked

Does Cosmos work on Minecraft 26.3?

Yes. 26.3 is the newest Minecraft version Cosmos declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Cosmos support?

Everything the author has declared, from 1.21.8 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Cosmos on the client or the server?

The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.

Which platform or loader does Cosmos support?

Fabric. 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 Cosmos?

Among the supported Minecraft releases above, the highest recorded requirement is Java 25 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What does Cosmos need to run?

It declares Fabric API and MidnightLib as required, so those have to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Cosmos under?

LicenseRef-All-Rights-Reserved, 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 Cosmos?

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 Cosmos 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. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

BookshelfAn open source library for other mods!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Details from Modrinth, where the author last updated it on 23 Sept 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .