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astrodynamics

Multi-body dynamics library as a PhD tool

Nyx: Blazing fast high-fidelity astrodynamics for Monte Carlo analyzes of constellations, interplanetary missions, and deep space flight navigation -- https://nyxspace.com/

webspice is an unofficial, experimental port of NASA's SPICE toolkit for astronomical observation geometry to WebAssembly.

A toolbox for computing and simulating solutions to the restricted three body problem.

Python tools for working with Orbital Ephemeris Messages (OEMs)