🌐EnglishEnglishEspañolFrançaisTürkçeРусскийالعربية한국어中文日本語EntityQ2564682· pop 16· linked from 58 articlesKepler problemspecial case of the two-body problemAvailable in 16 languagesEspañol中文日本語РусскийالعربيةCatalanChuvashCzechHebrewHungarianConnectionsgravityEntityinverse-square lawEntityCategoriesClassical mechanicsJohannes Kepler