- J. Barnes & P. Hut (December 1986). "A hierarchical O(N log N) force-calculation algorithm". Nature. 324 (4): 446–449. Bibcode:1986Natur.324..446B. doi:10.1038/324446a0.
- Roger R. Bate, Donald D. Mueller, Jerry E. White, Fundamentals of Astrodynamics, Courier Corporation, 1971
- Owen Gingerich, The eye of heaven: Ptolemy, Copernicus, Kepler, New York: American Institute of Physics, 1993, 181, ISBN 0-88318-863-5
- John E. Prussing, Bruce A. Conway, Orbital Mechanics, Oxford University Press, 1993
- Peter Fortescue, Graham Swinerd, John Stark, Spacecraft Systems Engineering, John Wiley & Sons, 2011
- https://en.wikipedia.org/wiki/Celestial_mechanics
- https://en.m.wikipedia.org/wiki/Caroline_Herschel
- https://en.wikipedia.org/wiki/Al-Sijzi
- https://en.wikipedia.org/wiki/Lexell%27s_Comet
- https://en.wikipedia.org/wiki/Fixed_stars
- https://en.wikipedia.org/wiki/Aristarchus_of_Samos
- https://en.wikipedia.org/wiki/Orbit_determination
- https://en.wikipedia.org/wiki/Copernican_heliocentrism
- https://en.wikipedia.org/wiki/Ptolemy
- https://en.m.wikipedia.org/wiki/Barnes–Hut_simulation
- https://en.m.wikipedia.org/wiki/N-body_simulation
- https://en.m.wikipedia.org/wiki/Octree
- https://en.m.wikipedia.org/wiki/Quadtree
- https://en.m.wikipedia.org/wiki/Discrete_element_method
- https://en.wikipedia.org/wiki/Two-line_element_set