Top 3 n-body-simulator Open-Source Projects

Principia

38 731 9.9 C++

𝑛-Body and Extended Body Gravitation for Kerbal Space Program

Project mention: A rudimentary simulation of the three-body problem | news.ycombinator.com | 2024-04-02

Principia is extremely impressive, they document all their math here: https://github.com/mockingbirdnest/Principia/tree/master/doc...
One interesting detail is that the source code makes extensive use of non-ASCII identifiers, for mathematical symbols and for the names of mathematicians. One of the two primary contributors is also an active contributor to Unicode

ThreeBodyBot

4 222 5.5 Jupyter Notebook

Poorly written code that generates moderately exciting plots of a very specific physics phenomenon that enthralls dozens of us around the globe.

Project mention: A rudimentary simulation of the three-body problem | news.ycombinator.com | 2024-04-02

This is the source code for the popular ThreeBodyBot [0]
It contains a numerics tutorial [1] that au found very useful for my use case.
[0] https://github.com/kirklong/ThreeBodyBot
[1] https://github.com/kirklong/ThreeBodyBot/blob/master/Numeric... (ipynb)

InfluxDB

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vplanet

3 128 9.4 C

The Virtual Planet Simulator

Project mention: Help with running exoplanet simulations | /r/research | 2023-12-10

Hello!! I'm an 11th grade AP Research student and I need help running exoplanet simulations. All of the simulations lead me to GitHub repositories (which I don't know how to use) and the installation guides are confusing. I'm currently looking at VPLanet (link to GitHub repository | link to installation guide), as well as vplot, PandExo, and Exo-Transmit. If there are any other options for running models of simulations, please let me know! My research is studying hycean exoplanets and relating them to future exoplanet characterization space missions, and I want to simulate a planet's conditions as well as instrumentation.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).