A fall na wani asteroid to Duniya a shekara ta 2017

Asteroids, wanda a nan gaba zai iya zama kusa da Duniya a nesa na miliyan 7.5 kilomita, suna dauke yiwuwar m ga Duniya. Duniyar mu ya ba da zarar fuskanci wadannan cosmic jikinsu. Yau muna magana game da yadda m asteroid to Earth, kuma akwai ga foreseeable nan gaba, yiwuwar samun wata babbar masifa? Kuma a fara da karamin tarihi tunani.

Mene ne wani asteroid?

Asteroid (daga Girkanci. "Star-kamar", "star") shi ma ake kira kananan duniya. Yana da wani wani sarari suKe jiki da cewa shi ne ya fi girma fiye da 30 km. Wasu daga cikin su suna da nasu da tauraron dan adam. A yawa na asteroids tafiya ta mu da hasken rana tsarin. Miliyan 3.5 da suka wuce, da Duniya ya auku wata babbar lamba na asteroids da ya kai ga duniya canje-canje.

Traces of tsoho asteroid

A cikin bazara na shekara ta 2016 a Australia, geologists sun samu burbushi na asteroid, da diamita daga wanda ya game 30-40 km. Wannan shi ne girman shi ne m zuwa kananan tauraron dan adam. A fall ne dalilin 11-girgizar kasa, a tsunami da tartsatsi devastation. Shi ne mai yiwuwa daya daga cikin asteroids, wanda ke haifar a cikin fall a ƙasa kafa ba kawai farkon rayuwa, amma kuma ya kafa bambancin da biosphere.

Akwai kuma wani ra'ayi cewa m bacewar na dinosaur ne saboda faduwar da wani babban asteroid to Earth. Duk da yake wannan shi ne kawai daya daga masu yawa iri na ...

Yana da fun! An tsoho tasiri bakin dutse Chicxulub aka kafa a sakamakon gamuwa da meteorite. Tana da zurfi da zarar ya kai har zuwa 20 km. A fall na meteorite sa a tsunami, da kuma sauyin yanayi, kamar nukiliya hunturu. Bugu da kari, har zuwa shekaru 16, a duniya zai iya fada wa 26 digiri zazzabi.

Chelyabinsk meteorite

A fall na wani asteroid to Earth a watan Fabrairu 2013 aka daya daga cikin mafi yi magana game da batutuwa ba kawai a Rasha amma kuma duk duniya. A asteroid, wanda nauyi kai 16 ton, partially ƙone a cikin yanayi, amma ta gwada karamin sashi fadi a kusa Chelyabinsk, sa'a, tashi a kan shi.

A wannan shekara, sai ya tafi a kan Ural birni, wanda aiki a matsayin dalilin da sunan da. Jiki da kanta da aka quite mediocre kuma kunshi chondrites, amma janyo hankalin sha'awa lokaci da kuma wuri da ya fall. Babu wani daga cikin auku ga Duniya asteroids ba sa irin wannan lalacewa, tun da shi ba ya fada da na yi kusa da wani densely lugar kauyen. meteorite nauyi ya 6 ton. Fadowa cikin lake Chebarkul meteorite sa buga daga windows a cikin 7000 da ginin. 112 mutane da aka kwantar da konewa, 'yan fiye da mutane ya juya zuwa ga likitoci domin taimako. A cikin duka, da tura kalaman share 6,5 dubu murabba'in mita.

A babban lalacewar ta wurin wani asteroid, zai zama yafi muhimmanci idan sama ba wani dutse ya fāɗa a ruwa da kuma a kan ƙasar. Sa'a, da asteroid a ƙasa ba juya a cikin wani babban-sikelin bala'i.

A mafi hatsari da fall na babban meteorite ga Duniya?

Bisa ga lissafin kimiyya, da masana da faduwar wani asteroid to Earth ne iya haifar da m lalacewa idan game da 1 km a size jiki zai fada a kan Duniya ta ƙasar. Da farko kafa mazurari diamita na kimanin kilomita 15, shi zai sa kura shiga yanayi. Kuma wannan, bi da bi, zai iya kai ga manyan-sikelin gobara. Dust, mai tsanani da rana, da rage matakin na lemar sararin samaniya don hanzarta sunadarai dauki a stratosphere, rage adadin hasken rana kai duniyar tamu ta surface.

Saboda haka, tasirin da asteroid to Earth ne ƙwarai da gaske. Global Duniya zafin jiki saukad a 8 ⁰ C, haifar da kankara shekaru. Amma domin ya kai ga nau'i nau'i na bil'adama, da asteroid dole ne 10 sau mafi girma.

giant hadari

Kwanan nan, masana kimiyya sun gano cewa, cikin jerin m barazanar zuwa wannan duniya tamu don hada centaurs - wata katuwar asteroid tare da diamita na 50 zuwa 100 km. A gravitational filin daga cikin sauran duniyoyi kowane 40-100 shekaru miliyan jefa su a cikin shugabanci na mu Earth. Adadin su ya kara da cika fuska a yanzu. Zai yiwu idan wata katuwar asteroid to Earth a nan gaba, masana kimiyya suna kullum lasafta, ko da yake lissafi na yanayin fall na centaur - wani aiki da wuya sosai.

Bugu da kari, cikin jerin m barazanar zuwa Duniya sun hada da:

• supervulkanicheskoe shigowa.
• duniya cutar AIDS.
• asteroid (0.00013 a%).
• yakin makaman nukiliya.
• muhalli bala'i.

Ko asteroid zai fada wa Duniya a watan Oktoba shekara ta 2017?

Babban batun, wanda a halin yanzu ta damu da masana kimiyya - wani hadari daga asteroid, girman wanda 2 sau fi Chelyabinsk meteorite. Akwai yiwuwar cewa wani taron da zai faru a watan Oktoba shekara ta 2017, wanda zai fararwa da wani yawa ya fi girma sikelin bala'i fiye da buga a 2013. Falakin Judith Rice ta bayar da hujjar cewa asteroid ta diamita kai kilomita 40. Ya abu mai lakabin WF9.

Hadari samaniya jiki da aka gano da masana kimiyya a Hawaii da baya a 2012. A wannan shekara ya kasance a kusa sosai nesa daga Duniya, da kuma Oktoba 12, 2017 zai zo kusa ga mafi hatsari ga duniya tamu ta nesa. Masana kimiyya yi imani da cewa idan da asteroid to Earth yake faruwa, shi za a gani na farko ta Birtaniya.

A lokacin, masana kimiyya suna rayayye karatu da yiwuwar wani karo. Duk da haka, da yiwuwar asteroid to Earth ne sosai kananan da kuma shi ne, cewar masu nazarin bincike, 1 a cikin wani miliyan. Duk da haka, shi ne har yanzu akwai.

m hadari

Ya kamata a lura cewa kullum tashi wasu asteroids na daban-daban masu girma dabam da Duniya. Su yiwuwar hatsari, amma sosai da wuya, haƙĩƙa fada to Earth. Saboda haka, a karshen shekara ta 2016 ya kaisu da Duniya a nesa na jiki 2/3 da nisa zuwa watã, girman karamin truck.

Kuma a watan Janairu 2017 da aka alama ta jirgin daga sama jiki, kai da girman da 10-storey gini. Yana tashi a cikin 180,000 km daga gare mu.