Ziningi izinsizakusebenza ezinikelwe yizikhungo ezahlukahlukene zomhlaba emhlabeni jikelele ocwaningweni lwasemkhathini nasekuhloleni. Ngaphakathi kwalezi zinto zemali nabasebenzi, kufanele sigqamise ukuthi kukhona eyodwa, ebaluleke kakhulu futhi, enikelwe ekuhloleni isikhala nasekuzameni thola futhi uthole zonke izinhlobo zezinsongo kwiplanethi yethu ethandekayo uMhlaba kusenesikhathi.
Ngenxa yalokhu, akumangazi ukuthi ngezikhathi ezithile sithola imibiko esitshela ukuthi ama-asteroid athile, ikakhulukazi amakhulu kakhulu angaba yingozi ethile eMhlabeni, adlula kanjani eduze kwawo. Sizoba nesibonelo esicacile ngokulandelayo Okthoba 12 walo nyaka 2017, usuku lapho, njengoba kubikiwe yi- ESA, I-European Space Agency, i-asteroid 2012 TC4 izodlula eduze kakhulu noMhlaba.
I-asteroid eyi-15 kuye kumamitha ayi-30 ububanzi izodlula eduze koMhlaba kepha ngaphandle kokwenza noma iluphi uhlobo lwemiphumela noma ukuwohloka
Njengoba igama le-asteroid likhombisa, ubukhona bayo batholwa ngonyaka ka-2012 yisibonakude sokuhlola i-Pan-STARRS esiseHawaii. Ngokuqondene nezici zayo ezithakazelisa kakhulu, phawula esikhuluma ngakho nge i-asteroid engaba ngamamitha ayi-15 kuye kwangama-30 ububanzi, ubukhulu obungabonakala buncane, ikakhulukazi uma siqhathanisa nobukhulu obudlulile eduze koMhlaba futhi obabungaba ngamamitha ayi-620 ububanzi, kodwa ukuthi, uma ifika eplanethi yethu, kungadala izinkinga ezithile obekufanele ukuthi sizihlelile futhi ngaphezu kwakho konke okulungiselelwe ukubhekana nazo, yingakho konke ukunyakaza okufanayo kusenzeka ziqashwe ngaso sonke isikhathi.
Ngokusho kwemibono eyenziwe ngochwepheshe be-ESA uqobo kanye nenani lonke lezazi zezinkanyezi ezibuke ukuhamba kwalo, kulinganiselwa ukuthi i-asteroid 2012 TC4 izondiza phezu kweplanethi yethu isivinini samakhilomitha ayi-14 ngomzuzwana iya ku- ibanga lamakhilomitha angama-44.000. Kuthiwa leli banga lizokwenza i-asteroid ingathinti ukusebenza kwamasathelayithi akude kakhulu nomjikelezo womhlaba womhlaba futhi atholakala cishe kumakhilomitha angama-36.000 ukusuka eMhlabeni.
Uma i-asteroid efana ne-2012 TC4 ibizoshaya eMhlabeni, bekungeke kube nemiphumela emibi
Ngokusho kwezitatimende ezenziwe ngusosayensi UDetlef Koschny, ilungu lamanje lethimba locwaningo lwe-Near Earth Objects, iqembu elixhaswe ngqo yizimali ze-ESA:
Siyazi ngokuqinisekile ukuthi akunakwenzeka ukuthi le nto izoshaya eMhlabeni. Ayikho ingozi.
Noma kunjalo… Yini engenzeka uma, naphezu kwakho konke ukungavumelani, i-asteroid ekugcineni ishintshe indlela eya kuyo ibheke eMhlabeni? Ngokusobala nangokuya kochwepheshe be-ESA ababuzwe ngaleli thuba lokucabanga, noma kunjalo akunakwenzeka ukuthi kubonakale, umthelela walesi asteroid noMhlaba ungaba nobungozi obufana ncamashi nalokho okwenzeka eChelyabinsk, idolobha laseRussia, e 2013.
Njengesikhumbuzo, akutshele ukuthi sikhuluma ngocezu lwenkanyezi enomsila eyaqhuma emkhathini. Ukushaqeka okwenze lokhu kuqhuma kwabangela amafasitela ezakhiwo ezingaphezu kuka-6.000 azophulwa okwenza ukuthi kulimale abantu abayi-1.500. Njengoba ukwazi ukubona, ingxenye enhle yalokhu ukuthi asikhulumi ngomcimbi onemiphumela emibi noma okunye okunjalo, yize kuzodingeka sizilungiselele.
Ososayensi bethu bazoba nethuba lokuphenya ukuzungeza nokwakheka kwalolu hlobo lomzimba wasezulwini
Ukushiya eceleni amathuba okuqagela ukuthi kungenzeka into enjengale, iqiniso ukuthi ososayensi emhlabeni wonke sebenethuba lokufunda okuningi ngokujikeleza nokwakheka kwama-asteroid. Njengoba kungafundwa ekukhululweni kwabezindaba okushicilelwe ngochwepheshe be- ESA:
Lo mcimbi uzosebenzisa inethiwekhi yomhlaba wonke yezindawo zokubuka nezinhlangano zocwaningo ezisebenza ekuvikeleni amaplanethi.
Imininingwane engaphezulu: Izikhathi zobuchwepheshe