
Orbital Mechanics
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthThis mod adds one block that allows you to create your own semi-functional solar system by combining Gravity control by (tfarecnim) and Sable Physics all in one block.
- Dense Core

Dense Core Functionality: With this block, you can create your own central source of gravity, and it affects all entities and Sable sub-levels within the radius.

[Sub-levels & Modes](only effects sub-levels)
Any sub-level with a dense core will completely negate gravity, whether it is activated or not. When activated near an activated in-world core radius, it will orbit roughly the sum of the radii of the two cores.
(InworldcoreR + Sub-levelcoreR) ~ Orbit Radius
and orbital velocity is based on this formula
V = √GM / R
where GM = 864 for simplicity
Depending on the mode, the sub-levels with cores could change how they choose to orbit.
- Parent: Will prioritize orbiting in world cores and cannot orbit sub-levels with cores.
- Child: Will prioritize orbiting sub-level cores and can also orbit in world cores.
P.S (I've always wanted to make this mod for a while and hope people have fun. There are no survival crafting recipes in the mod, and it is fairly new, so Idk if there are any crazy issues)
- 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: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as orbitalmechanics-1.5.0.jar — drop this file into the mods folder
- Download size: 69 KB
- Download link checked 11 Nov 2026 — working
These come from our own check of the pack file, not from the source page.