AstronomersAstronomyAstronomy and astrophysics -- History of astronomy and astrophysics .BiographyHistory and biography -- History of mathematics and mathematicians -- 19th centuryHistory and biography -- History of mathematics and mathematicians -- 20th centuryHistory and biography -- History of mathematics and mathematicians -- UniversitiesHistory and biography -- Research exposition (monographs, survey articles)MathematicsMechanics of particles and systemsMechanics of particles and systems-- Dynamics of a system of particles, including celestial mechanics -- Three-body problemsMoulton planesOrbitsThree-body problem
