Kunyaka ophelileyo, izazi ngeenkwenkwezi zafumanisa amawaka ee-ateroids ezazingaziwayo emhlabeni, ezirekhodiweyo kuwo onke amaxesha okujonga. Oku kuxelwa kwimagazini yendalo.
Kwisithandathu sika-Matshi 2021, Asteroid Apophis aya kusondela kumgama okufutshane kwiminyaka esibhozo. Isithuba "I-Pebble" Ngobubanzi beemitha ezingama-340 zibhabhele ngezigidi ezili-16 ezigidi kwiplanethi yethu, ethathwa ngumgama okhuselekileyo.
Ngowama-2029, uApofus uya kubuya kwakhona, eli xesha intlanganiso yakhe nomhlaba ayiyi kuba yingozi: i-asteroid iya kulingana neplanethi yamawaka amawaka kwaye iya kuba ngaphakathi kwe-geostite ye-geosticari, ngokuthintela iplanethi ejikeleze iplanethi . Indwendwe linokubonwa ngamehlo. I-Astronomers okokuqala kwimbali iya kuba nakho ukujonga i-asteroid enkulu kufutshane.
Ukhuseleko lweplanethi
Isithuba se-Asteroid Asteroid kwiveki ephelileyo inike izazinzulu ithuba elifanelekileyo lokuvavanya inkqubo yesilumkiso malunga neemeko ezinobungozi. Ngeeteleskopu ezikhethekileyo, izazinzulu ezivela kwiindawo ezahlukeneyo zomhlaba zibeka esweni isibhakabhaka ebusuku kwaye silandelele izinto ezisemhlabeni ezibonisa ingozi enokubakho kwiplanethi yethu. Imizamo ukuba bagcine apophis lubonise ukuba amaqela izazi, kuyo nayiphi na inxalenye abehlabathi, unako ukusebenza kunye ukuqinisa ingozi ukusuka 'ngamatye' cosmic ncedo ngemali.Khangela i-asteroids
Zonke iiarhente ze-aerospace zomhlaba zineenkqubo zazo zesilumkiso malunga neemeko eziyingozi kwindawo ekufutshane. Umzekelo, i-NASA isebenzisa le nkqubo yokukhangela i-asteroids kufutshane nomhlaba kwaye ivavanya isoyikiso sabo esinokubakho ukusukela ngo-1998. Ngeli xesha, abasebenzi bearhente bafumanisa izinto ezinjalo ezingama-25,000. Njengoko indalo ibhala, kulo nyaka uphelileyo sele irekhodi ngokuvula. Ngaphandle kweCovid-19 ubhubhane, ophembelela umsebenzi weengcali ezininzi, izazi ngeenkwenkwezi zafunyanwa zaza zangeniswa kwikhathalogu yama-2958 ngaphambili yayingaziwa ngu-Asteroids.
Ngaphezulu kwesiqingatha sale mizimba sikwazi ukuqaphela ngovavanyo lwe-calina sky - iiteleskopu ezintathu ezikwiArizona. Iiteleskopu zazikwazi ukubona ne-Alteroid ye-Asteroid ngokupheleleyo ye-2020, ububanzi obungaphantsi kwe-3 yeemitha, ezazibumba amandla omhlaba wasemhlabeni. I-satellite yethutyana yomhlaba ichithe imingxunya yokuxhuzula kwaye ishiye i-geocet ye-geocentric ngo-Epreli kunyaka ophelileyo. Eyona nto iphambili i-2020 cd3 - 32m, uAlbeo - 0.1--0.6.
[Inqaku lesihloko: I-Arhente yendawo yaseYurophu: Umhlaba woyikisa i-Asteroids ezili-15]
Enye i-batch ye-Asteroids ezikufuphi - i-1152 into, yavula inkqubo ye-panrs ye-telescope eHawaii. Phakathi kwento efuna ukwazi-2020 Ke, eyayingeyiyo i-asteroid, kodwa yinxalenye yeyunithi yokukhawulezisa "iCentaurus" ye-Apturus 2 yoVavanyo, eyasungulwa endaweni yowe-1966.
Ezinye ii-asteroids
Ezinye zezinto ezisemhlabeni ezifumaneka ngo-2020 zafika emhlabeni ukuze kubekho umgama osondeleyo. Ubuncinci i-107 kubo idluliselwe yiplanethi yethu kumgama, engaphantsi komgama ukuya enyangeni.
Umzekelo, ngo-Agasti, i-asteroid 2020 QG Flew i-2950 km ngaphezulu koLwandlekazi lwaseIndiya. Kwaye emva kweenyanga ezintathu, enye into encinci enobubanzi obuyi-5-10 yeemitha - i-2020 VT4, yapasisela kuphela i-345 kuphela ye-345 kuphela ukusuka emhlabeni, ezantsi kwe-ISHIPT. Imifanekiso yokuqala yafunyanwa iiyure ezili-15 kuphela emva kokuba esondele kwiplanethi yethu. Ukuba ungenise amangqinisi aqinileyo emoyeni, ke, onokubakho, uya kuwa.
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