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Maybe neat to do astrodials and early mechanical clocks to represent skew against astro sync https://github.com/kshetline/prague-clock

pablo-mayrgundter

Apparently there's lots of them :-o And probably some 3d datasets out there also some velocity modeling for LCDM https://sketchfab.com/3d-models/attractors-in-reconstruction-from-cf4-galaxies-fb0c18e7930c4b6b94e3f6a30202bd6a

pablo-mayrgundter

Would be super fun to do parametric gen on gas giants like some of these full-sized mockup https://emildziewanowski.com/flowfields/ https://www.youtube.com/watch?v=vEw4XCQkaro shader for great red spot https://www.shadertoy.com/view/lc3XzM

pablo-mayrgundter

Found in discussion here: https://news.ycombinator.com/item?id=39591529 The Harvard SIMBAD database https://simbad.cfa.harvard.edu/simbad/

pablo-mayrgundter

Newtonian physics & integrator-based orbits

2

[Gravity Engine](http://nbodyphysics.com/blog/) is really neat: - http://nbodyphysics.com/blog/gravity-engine-doc-1-3-2-2-2/ - http://nbodyphysics.com/blog/gravity-engine-doc-1-3-2-2-2/gravity-engine-7-0/ This appears to have oct-trees (toggle the show bounds): - https://github.com/strainer/fancy From https://prideout.net/gpu-particles: rebound KeplerOrbits GAL Tudat Post-Keplerian orbits https://en.wikipedia.org/wiki/VSOP_(planets)#VSOP87 https://en.wikipedia.org/wiki/Ephemeride_Lunaire_Parisienne...

pablo-mayrgundter

- [x] @react-three/fiber introduced around commit 302. See /vsop

pablo-mayrgundter

Atmospheres

14

Could be bounded exponential fog to start with, but would like to use a good refraction model. Found this: https://stackoverflow.com/questions/31955731/how-to-make-an-atmosphere-using-threejs But there's also the work of the guy at google...

pablo-mayrgundter

Milkyway galaxy

4

pablo-mayrgundter

Milkyway center Sagitarius A* black hole/Relativistic spacetime

2

- [A Real-time High-quality Black Hole Shader](https://ebruneton.github.io/black_hole_shader/index.html) by Eric Bruneton, 2020 - which cites: [Gravitational Lensing by Spinning Black Holes in Astrophysics, and in the Movie Interstellar](https://arxiv.org/abs/1502.03808) ### GR background...

pablo-mayrgundter

Numerical integration seems odd

6

https://github.com/pablo-mayrgundter/celestiary/blob/5c8e5f2b32272cf07a95f450987bb16596acbba8/js/Galaxy.js#L116-L124 What are lines 118 and 119 for? On the plus side, lines 120-122 seem to be doing semi-implicit Euler integration, which is a reasonable choice. Basically, the order you...

won3d