Ziyini izinhlobo zezinto zasemkhathini?
I - International Astronomical Union (IAU) ihlukanisa izinto ezisesimisweni sonozungezilanga ngezigaba ezintathu: 1. Izinkomo Iplanethi: umzimba wamazulu ozungeza iLanga, onobunzima obanele bokuthatha isimo (esicishe sibe yindilinga) sokulingana kwe-hydrostatic, futhi "osuse indawo ezungezile" ezungeze umjikelezo wayo, 2. Izingelosi Iplanethi eyi-dwarf: umzimba wamazulu ozungeza iLanga, onobunzima obanele bokuthatha isimo (esicishe sibe yisiyingi) sokulingana kwe-hydrostatic, kodwa lokho "akukahlanzi omakhelwane" ezungeze umjikelezo wawo futhi akuyona isathelayithi, 3. Izindaba Ezinhle Imizimba emincane yohlelo lwelanga: zonke ezinye izinto ezizungeza ilanga ezingezona iziphuphutheki.  Imizimba emincane yohlelo lwelanga ihlanganisa: - Izinyanga: izindikimba zasezulwini ezizungeza iplanethi noma iplanethi encane, - Ama - Asteroid: izinto ezinamadwala ezingeyona imbulunga ezisele kusukela ekubunjweni kokuqala kohlelo lwelanga. Zizungeza ilanga futhi eziningi zazo zitholakala ngaphakathi kwebhande lezinkanyezi ezinkulu phakathi kweMars neJupiter, - Izinkanyezi ezinomsila: izindikimba ezinomkhuhlane ezingaba namaminerali, amatshe nothuli olusele lapho kwakhiwa isimiso sonozungezilanga. Zihamba zizungeza ilanga futhi zingatholakala kakhulu ngaphesheya kweNeptune eBelt Kuiper, kanye nangaphesheya kwePluto e-Oort cloud, - Ama-meteoroid: izinto ezisemkhathini ezivame ukuvela kweminye imizimba emikhulu njengezinkanyezi ezinomsila, ama-asteroid noma ngisho nezinyanga namaplanethi. Ama - meteoroid angaba ngamatshe, amanye abe ngensimbi, noma inhlanganisela yakho kokubili. Ubukhulu bawo buhlukahluka kusukela ezinhlayiyeni zothuli kuya kuma-asteroid amancane.