mockingbirdnest/Principia
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𝑛-Body and Extended Body Gravitation for Kerbal Space Program
22 mentions on Hacker News by 16 people: 0 stories, 22 comments · first 2015-03-18 · latest 2026-06-29
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It's also the name of an n-body physics mod for Kerbal Space Program. https://github.com/mockingbirdnest/Principia
comment by LorenDB · 2026-06-29 · in Building Principia for Windows XP -
…this one is designed for stock gravity so it should be usable in an otherwise vanilla install. [0]: https://github.com/mockingbirdnest/Principia [1]: https://github.com/Arrowstar/ksptot
comment by aw1621107 · 2024-12-21 · in The Parker Solar Probe will make its closest approach yet to the Sun -
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…
comment by Georgelemental · 2024-04-03 · in A rudimentary simulation of the three-body problem -
…but the Principia source code has a comprehensive units system and makes effective use of Unicode: https://github.com/mockingbirdnest/Principia/ https://github.com/mockingbirdnest/Principia/blob/master/ast... is a decent example of both:…
comment by db48x · 2022-09-10 · in Ask HN: What's the best source code you've read? -
There is a high-quality mod which adds n-body gravity: https://github.com/mockingbirdnest/Principia It will also add orbital perturbations/frozen orbits if you use Real Solar System: https://github.com/mockingbirdnest/Principia/blob/master/…
comment by ericbarrett · 2022-06-23 · in Unexpected solar weather is accelerating satellites' orbital decay -
…developed, works with the stock solar system & Real Solar System. A truly stunning achievement. https://github.com/mockingbirdnest/Principia
comment by ericbarrett · 2022-05-16 · in Release Date Update from the KSP2 Team -
…shouldn't have been so confident in that particular line of questioning. Sorry about that. [0]: https://github.com/mockingbirdnest/Principia/blob/f84c96953a...
comment by aw1621107 · 2021-04-28 · in Orbit Tessellation developer diary for Kerbal Space Program 2 -
There's always Principia for your n-body needs [0]. [0]: https://github.com/mockingbirdnest/Principia
comment by aw1621107 · 2021-04-27 · in Orbital Mechanics – How do rockets get to where they're headed? -
…Realism Overhaul mod if you wish to work with more realistic rockets and celestial bodies [1]. [0]: https://github.com/mockingbirdnest/Principia [1]: https://forum.kerbalspaceprogram.com/index.php?/topic/155700...
comment by aw1621107 · 2021-04-27 · in Orbital Mechanics – How do rockets get to where they're headed? -
…"Orbit Type Diagrams"[3][4] show the fractal-like complexity of three or n-body problems[5][6] [0] https://github.com/mockingbirdnest/Principia [1] https://www.youtube.com/watch?v=l3PCCJZzVvg [3] https://www.semanticscholar.org/paper/Crash-…
comment by 7373737373 · 2021-04-26 · in Orbit Tessellation developer diary for Kerbal Space Program 2 -
…in effect between the "most influential" and less-influential bodies would be smaller. [0]: https://github.com/mockingbirdnest/Principia/issues/2247#iss...
comment by aw1621107 · 2021-04-26 · in Orbit Tessellation developer diary for Kerbal Space Program 2 -
…objects according to the calculations, with some changes because the stock system is unstable. https://github.com/mockingbirdnest/Principia
comment by outworlder · 2020-06-03 · in Kerbal Space Program 2 release disrupted by corporate strife -
KSP community implemented n-body physics: https://github.com/mockingbirdnest/Principia
comment by garaetjjte · 2020-06-03 · in Kerbal Space Program 2 release disrupted by corporate strife -
There already is a pretty good one available as a mod: https://github.com/mockingbirdnest/Principia
comment by Sanzig · 2019-10-26 · in A neural net solves the three-body problem 100M times faster -
and you can mod n.body and real universe in it: https://github.com/mockingbirdnest/Principia https://forum.kerbalspaceprogram.com/index.php?/topic/177216... getting them all to work together might be a little finicky, for a realistic…
comment by LoSboccacc · 2019-10-07 · in An Inside Look at Microsoft’s Newest Flight Simulator -
>Here's a random selection: https://github.com/mockingbirdnest/Principia/blob/master/phy... I don't think r² as a variable name is a good idea. It may look natural for some (including myself), but for others it implies a function while not…
comment by orbital-decay · 2019-06-08 · in Rust, Macros, λ-calculus/Church numerals, oh my -
…a great units system too; it's worth reading the code just for that.) Here's a random selection: https://github.com/mockingbirdnest/Principia/blob/master/phy... Like anything else, it can certainly be misused. That doesn't mean it's never…
comment by db48x · 2019-06-08 · in Rust, Macros, λ-calculus/Church numerals, oh my -
…actually want is KSP modded with Principia to give you an n-body simulation of the solar system. https://github.com/mockingbirdnest/Principia
comment by ahakki · 2019-06-04 · in Planetary Transfer Calculator -
You might be interested in this mod for KSP which adds n-body physics: https://github.com/mockingbirdnest/Principia
comment by YaxelPerez · 2018-12-02 · in Show HN: Harmony of the Spheres – Gravity Simulator -
…you were looking for, but could be something! [0] https://www.kerbalspaceprogram.com/en/ [1] https://github.com/mockingbirdnest/Principia
comment by DonaldPShimoda · 2018-07-28 · in Kathleen Howell is developing potential orbits around a Lagrange point -
…especially if used in conjunction with a mod like RealSolarSystem which has real-life celestials. https://github.com/mockingbirdnest/Principia
comment by shrx · 2017-06-01 · in Kerbal Space Program Acquired by Take-Two Interactive -
…change that check out Principia :) http://forum.kerbalspaceprogram.com/threads/68502-WIP-Princi... https://github.com/mockingbirdnest/Principia
comment by Lutin · 2015-03-18 · in Planets in the Fourth Dimension