ModsJava
Astral Horizon Engine Mod (1.21.1) – Build Custom Rockets and Colonize Alien
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download







Astral Horizon Engine Mod brings modular rockets, customizable star systems, and deep space exploration to Minecraft. Players can construct custom spacecraft, build orbital stations, and travel between distant worlds. The mod adds asteroid mining, gas harvesting, and planetary terraforming mechanics. You can scan the skies using ground observatories to find new celestial bodies and analyze space flight data.
![]()
Features:
- Modular rockets that you can assemble, fuel, and launch into orbit.
- Interactive 3D star system with custom planets loaded from data files.
- Modular space suits that keep players safe in dangerous atmospheres.
- Orbital space stations equipped with warp engines for interstellar travel.
- Observatory blocks to search for uncharted planets and mining targets.
- Astrobody data processor blocks to review data collected from space.
- Modular satellites that orbit planets to collect scientific data.
- Asteroid and gas mining systems for collecting off-world resources.
- Terraforming tools that let you change alien atmospheres and ground biomes.
- Custom moon biomes including volcanic plains and frozen crystal fields.
- Custom skybox rendering built for outer space and distant planetary views.
Screenshots:








Astral Horizon Engine Mod Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Downloads as 505593.mcaddon
- Download size: 32.5 MB
- Download link checked 24 Sept 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.