<prompt> I-Keplers laws of planetary motion ichaza imijikelezo yezinto ezungeze iLanga. Ukulandela imithetho kaKepler, into ngayinye ihamba nge-ellipse neLanga endaweni eyodwa. Izinto eziseduze neLanga ezinama-semi-major axes amancane zihamba ngokushesha okukhulu ngoba zithinteka kakhulu ngamandla adonsela phansi kweLanga. Emjikelezweni we-elliptical, ibanga lomzimba eliseLangeni liyahlukahluka phakathi nonyaka. Indawo eseduze kakhulu neLanga ibizwa ngokuthi yi-perihelion yayo, kanti iphuzu layo elikude kakhulu neLanga libizwa nge-aphelion yayo. Ama-orbit amaplanethi acishe abe yisiyingi, kepha ama-comets amaningi, ama-asteroids, nezinto zebhande le-Kuiper zilandela imijikelezo ye-elliptical kakhulu. Izikhundla zemizimba yohlelo we-Solar zingabikezelwa kusetshenziswa amamodeli amanani. Umbuzo: Yini eyenziwa yizo zonke izinto ngokuya ngemithetho kaKepler?  <response>: Ilanga 