by Florian Ehrenreich·Simulation
Images © Florian Ehrenreich. Used for product review; image policy.
Planet Simulation stands out in the superhive library because it converts gravitational physics into standard Blender animation data, so simulated orbits behave like any other keyed animation. A demo video is available.
Planet Simulation is a Blender addon from Florian Ehrenreich that builds physically accurate gravity simulations. You place as many planets as your CPU can handle, move them around freely, and set each one's initial velocity. A single button brings the system to life, and every planet begins attracting the others.
Under the hood it relies on Newtonian physics, updating each planet's position through numerical integration. The output is saved as plain animation data on the planet objects, which means you can scrub and play it back like any other Blender animation. You control the number of planets, their mass, initial velocity, density (set by scaling a planet while keeping its mass the same), the simulation step and accuracy, the strength of gravity, and how long the simulation runs.
The addon covers only motion, not textures or models — you parent your own planets or objects to the generated icospheres and apply materials. It works across Blender 4.3 through 3.0 under the GPL license, with documentation and a demo video included.
Planet Simulation is best for blender users who want to animate gravitationally interacting planetary systems and experiment with stable orbits and gravity patterns.
Planet Simulation is completely free to download and use.
Planet Simulation supports a wide range of Blender releases, including 4.3, 4.2, 4.1, 4.0, and the 3.x line all the way down to 3.0. That coverage means it fits both current installs and older setups still running earlier versions. The addon is distributed under the GPL license. If you're unsure whether your exact build is covered, check the developer's page for the current list before installing, since supported versions can change over time.
Planet Simulation handles only the physics and animation, not textures or 3D models. It generates icospheres labelled as planets and produces the motion data for their orbits. To build a finished scene, you parent your own planets or other objects to those icospheres and assign your own materials. That keeps the addon focused on gravitational behaviour while leaving the look of each body entirely up to you.
Planet Simulation uses Newtonian physics, updating every planet's position through numerical integration as the bodies attract each other. You set each planet's mass, initial velocity, and density, then adjust the simulation step and accuracy, the strength of gravity, and the overall duration. Pressing a button runs the calculation, and the result is stored as ordinary animation data on each planet, so you can play it back like any other Blender animation.
Planet Simulation is listed as free here in the catalog, and it's distributed under the GPL license. Pricing and licensing terms can shift, so for the current details it's best to check the developer's page directly. Beyond that, the addon lets you run as many planets as your CPU can handle, adjusting mass, velocity, density, gravity strength, step accuracy, and simulation duration to explore different orbital patterns.
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