Kulokhu okuchaziwe, thatha isilinganiso sokuphakama kwe-ISS ngamakhilomitha.
Context:Uhlelo lwe - ISS lwavela eSiteshini Somoya i - Freedom, isiphakamiso saseMelika sango - 1984 sokwakha isiteshi esizungeza uMhlaba esihlala njalo, kanye nesiphakamiso se - Soviet / Russian Mir-2 sango - 1976 esasinemigomo efanayo. I - ISS iyisiteshi sesishiyagalolunye sasemkhathini esihlala abantu, ngemva kwesiteshi saseSoviet nesaseRussia i - Salyut, i - Almaz, ne - Mir nesiteshi saseMelika i - Skylab. Yinto enkulu kunazo zonke eyenziwe umuntu esimisweni sonozungezilanga futhi iyisathelayithi enkulu kunazo zonke emzileni ophansi womhlaba, ebonakala njalo ngeso lenyama kusuka ebusweni bomhlaba. Igcina i-orbit enobude obuphakathi kwamakhilomitha angama-400 (250 mi) ngokusebenzisa ama-reboost maneuvers asebenzisa izinjini ze-Zvezda Service Module noma ukuvakashela isikhala. I-ISS izungeza umhlaba cishe ngemizuzu engu-93, iphelelisa ukuzungeza komhlaba okungu-15,5 ngosuku.
I-ISS izungeza umhlaba isendaweni ephakeme ngamamayela angu-450 ngokwesilinganiso.