Elisemkhathini: Antarctica, eMexico ...

Ukuwa kwe-netshe elisemkhathini Emhlabeni - sehlelwe inhlekelele enkulu yembulunga yonke. It njalo kwaholela zesimo sezulu iplanethi yethu, ngenxa okuyinto safa lenqwaba zama-eziphilayo. Ngokusho komunye umbono othembeke kunabo, okungukuthi le nguzunga wabangela Permian-Triassic yokuqothulwa umcimbi mayelana iminyaka eyizigidi ezimbili namashumi amahlanu edlule. yokuqothulwa Permian, nakuba kungaziwa kahle umphakathi, sasidabukisa okungaphezu abadumile dinosaur yokuqothulwa eminyakeni million ayisikhombisa edlule. Esimweni sokuqala wafa kuze kufinyelele 96% of the izinhlobo zezinto eziphilayo zasolwandle (ezifana izitshalo nezilwane). On izwe abelusi baka Loti nabaka khulu hle ukubulala amaphesenti angamashumi ayisikhombisa eliwumhlaba zinhlobo yezilwane ezinomgogodla futhi amaphesenti zinhlobo isinambuzane ayisishiyagalombili nantathu. Lokhu nokuqothulwa zezinambuzane imvelo wayengaselona, njengoba lezi eyisinambuzane Kulula kakhulu ukuzivumelanisa esiguquguqukayo.

Le nhlekelele yesibili Koma ingasaphathwa, kodwa-ke, futhi, kwakukhona indawo okuyizona begazi, okuholela ukuvela nokuthuthukiswa ezincelisayo. inombolo Hypothesis eyodwa - le nguzunga efanayo. Esimweni sokuqala, abacwaningi ukhombe wentaba Wilkes Land e-Antarctica, okuyinto, ngokombono wabo, kwamiswa ukuwa le nguzunga, kwesibili - kwi Chicxulub wentaba eMexico.

Wilkes Land wentaba has a ububanzi of amakhilomitha anamakhulu mahlanu. It is efihlekile ngokuphelele ngaphansi igobolondo ice-Antarctica, ngakho silitadishe akunakwenzeka okwamanje. Kodwa ngo-2009-ke lwenziwe radar izifundo, futhi sathola ukuthi kwakulungile has a isici ukuma umthelela asemigodini kwakheka kwi site of the netshe elisemkhathini noma elikhulu eliwa emkhathini. Crater Chiksulub ezincane kakhulu futhi unesipiliyoni ububanzi eziyikhulu namashumi ayisishiyagalombili amakhilomitha. Lokho nenkundla elisemkhathini bawa kuncike esikalini ukushabalala eziphilayo ezihamba ezweni.

Izazi zezinkanyezi esivumelwaneni mayelana nokuthi uluphi uhlobo umcimbi umthelela - kokuwa elisemkhathini, futhi abanye - ukuwa kwemvula yezinkanyezi ezinomsila, inkanyezi enomsila noma enye into. Abacwaningi at esibhakabhakeni awukwazi ukunquma ukuthi izinto ezisemkhathini kufanele labizwa ngokuthi asteroyidi, futhi yini - ku emkhathini ngisho amaplanethi. Eminyakeni eyisikhombisa edlule, pundits sinqume ukwaba isigaba esisha izindikimba zasezulwini. It eqoshiwe asteroyidi eziningana ezinkulu futhi zehliswa ezikhundleni kusukela isikhundla sale iplanethi Pluto. Ikilasi wanquma ubizwe "Uma amaplanethi yemifino." Ukuqamba akuyona lamukelwa endaweni yonke, njengoba izazi zezinkanyezi eziningi azongenela ngokufaneleka ngezigaba entsha.

Kwenzekani phakathi no-February umcimbi lanyakazisa eRussia, futhi ikakhulukazi - Ural. I kwemvula yezinkanyezi ezinomsila, eyawela eduze Chelyabinsk, Ochwepheshe kusukela NASA kubhekwe kunazo zonke kwezingu-isintu waphawula ngemva Tunguska. On inkumbulo abantu kwaba emkhathini kwayilimaza kakhulu futhi ukulimala. Nakuba yasihlephula zibe yizicucu engakafiki phansi, wakwazi ukwenza okuningi izinsizi, zilimaze esitolo omunye Chelyabinsk isitshalo. I cindezela libike ukuthi meteorite - walowo elisemkhathini ukuthi kuzodlula eduze Earth, futhi kungenzeka ukuthi luzowa ensimini Luhambo kule planethi yethu.

Ngokuthakazelisayo, emkhathini esifundeni esise-Ural yinto cishe ajwayelekile, siqu, lwendabuko. Umkhakha elincane Chelyabinsk esifundeni (esingaphansi ayisishiyagalolunye ayizinkulungwane amakhilomitha square) ezinsukwini zokugcina ayisikhombisa nanhlanu iminyaka okwesithathu iba maphakathi Luhambo izivakashi emkhathini. Ngo-1941 no-1949, endaweni etholakala enyakatho emzini Katav-Ivanovsk namakolishi Kunashak nazo ziwe emkhathini, noma lilincane kakhulu ngobukhulu. Bobathathu kungenziwa exhunywe kwi-indawo crash i cishe ngqo umugqa ubude akukho amakhilomitha angaphezu kuka angamakhulu amabili namashumi amahlanu. Okunjalo emkhathini lokuhlushwa endaweni elinganiselwe esikhathini ezifana esifushane ayitholakali noma yikuphi emhlabeni. Awu, nje abanye obuyimfihlo!

Le ngozi esifundeni esise-Ural wembula ukuthi sibuthakathaka ukuba bombardment ukusuka endaweni. ERussia, waqala ukuthuthukiswa kohlelo iminyaka eyishumi ngenxa ukuvikelwa izinsongo cosmic.