<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Ukudlula: Imithetho kaKepler yokuhamba kwamaplanethi ichaza imijikelezo yezinto ezizungeza iLanga. Ngokwemithetho kaKepler, into ngayinye ihamba nge-ellipse lapho ilanga ligxile endaweni eyodwa. Izinto eziseduze neLanga ezinama-semi-major axes amancane zihamba ngokushesha okukhulu ngoba zithinteka kakhulu ngamandla adonsela phansi elanga. Emzileni we-elliptical, ibanga lomzimba elangeni liyahlukahluka phakathi nonyaka. Indawo eseduze kakhulu nomzimba elangeni ibizwa ngokuthi i-perihelion, kuyilapho indawo ekude kakhulu neLanga ibizwa ngokuthi i-aphelion. Imijikelezo yamaplanethi icishe ibe eyisiyingi, kodwa izinkanyezi ezinomsila eziningi, ama - asteroid, nezinto ezisebhande likaKuiper zilandela imijikelezo emise kakhulu. Izikhundla zemizimba eseSimisweni Sikanozungezilanga zingabikezelwa kusetshenziswa amamodeli amanani. Umbuzo: Ngokwemithetho kaKepler, zonke izinto zigxila kuphi?  <response>: Ilanga 