Dayrta ee asteriyoodh uu si Earth ee 2017

Astiriyoodhada, kaas oo mustaqbalka laga yaabaa in u dhaw in ay dhulka fogaan ah 7.5 million kiiloomitir, waxaa loo tixgeliyaa halis in Earth. Dhulkeenna ayaa mar aan wajahay jidhadhkooda runtan. Maanta waxaan ka hadlaan asteriyoodh sida ay khatarta in Earth iyo waa ay jiraan mustaqbalka dhow, jaaniska musiibo weyn? Iyo in la bilaabo a tixraaca yar taariikhiga ah.

Waa maxay asteriyoodh uu?

Asteriyoodh (ka Giriigga. "Star-sida", "star") waxaa kaloo loo yaqaan meeraha yar. Waa jirka ah kuwa samadu waa ka badan 30 km. Qaar ka mid ah iyaga ka mid ah waxay leeyihiin satalayt iyaga u gaar ah. Dad badan oo astiriyoodhada safraya xagga nidaamka qoraxda. 3.5 milyan oo sano ka hor, Earth ayaa dhacday tirada weyn astiriyoodhada keentay in isbedellada caalamka.

Raad asteriyoodh qadiimiga ah

In guga ee 2016 ee Australia, Haseyeeshee helay raad asteriyoodh ah, dhexroorka ah taas oo ahayd qiyaastii 30-40 km. Taasi waa size waxaa ka mid ah uu u dhigmo satellite yar. dayrta sabab u ahayd dhulgariir 11-magnitude, tsunami iyo burbur baahsan. Waxay u badan tahay in uu ahaa mid ka mid ah astiriyoodhada, taas oo keentay in dayrta oo dhulka ku sameeyay ma aha oo kaliya bilowga nolosha, laakiin sidoo kale la aasaasay kala duwanaanshaha biosphere ah.

Waxa kale oo jira fikir ah in ka lumay dahsoon ee dinosaurs ay sabab u ahayd dayrta ee asteriyoodh weyn in Earth. Iyada oo ay tani waa mid ka mid kaliya ee versions badan oo ...

Waa xiiso leh! An saameyn qadiimiga bohol Chicxulub waxaa la sameeyay iyada oo sababtu tahay la kulanka meteorite ah. Its qoto dheer mar gaadhay 20 km. dayrta ee meteorite uu keeno tsunami ah, iyo isbeddelka cimilada, sida jiilaalka nuclear. Intaa waxaa dheer, ilaa 16 sano on Earth dhici karta ilaa 26 digrii heerkulka.

Chabrovsk meteorite

dayrta ee asteriyoodh uu si Earth bishii Febraayo 2013 waxay ahayd mid ka mid ah ugu hadlay oo ku saabsan dhacdooyinka ma aha oo kaliya in Russia laakiin sidoo kale adduunka oo dhan. asteriyoodh The, oo miisaankiisu gaadhay 16 tons, qayb ahaan gubay jawiga, laakiin ay qayb yar dhacay meel u dhow Chabrovsk, nasiib wanaag, duulaya waxa ka weyn.

In sano, wuxuu u tegey magaalada Ural, taas oo u adeegi jireen sida saldhig u ah magaca muddo ka badan. jirka laftiisa ahayd arrin xumo oo ka koobnaa chondrites, laakiin jiitay markii xiiso iyo meesha uu ku dhacaan. Ma jiro mid ku dhacday si Earth astiriyoodhada ma keenaan waxyeelo sida, tan iyo ma aysan ku dhicin si u dhow tuulo dadku ku badan yihiin. miisaanka meteorite ahaa 6 tons. Hoos baddii meteorite Chebarkul sababto in reebtay daaqado 7000 dhismaha. 112 oo qof ayaa cusbitaalka la gubasho, dad yar oo dheeraad ah u soo jeestay in dhakhaatiirta caawimaad. Guud ahaan, la ruxruxo lama filaan ah ku xaaqay 6,5 kun oo mitir oo laba jibbaaran.

Burburka weyn sababa asteriyoodh uu, waxay noqon lahayd wax badan oo dheeraad ah oo la taaban karo haddii samada ma aha dhagax oo biyaha ku shubaa iyo dhulka ku dhacay. Nasiib wanaag, asteriyoodh uu dhulka ku ma uma leexdo xagga musiibo baaxad weyn a.

dayrta khatar badan ee meteorite weyn in dhulka?

Sida laga soo xigtay xisaabaha saynisyahano, dayrta ee asteriyoodh uu si Earth waa awoodaa inuu u keeno dhaawac weyn haddii qiyaastii 1 km ee jirka size ku dhici doontaa dhulka dalka. Ugu horayn la aasaasay dhexroor masaf qiyaastii 15 km, waxa ka dhigi doonaa in ciidda ay galaan jawiga. Markaasaa waxaa taas wada, markeeda, oo keeni karta in dab baaxad weyn. Boorka, kululeeya qorraxda, yareeyo heerka Allena si loo dardar-reaction kiimikada ahan ee, loo yareeyo xaddiga qoraxda gaarey dusha meeraha ee.

Sidaas darteed, saamaynta asteriyoodh si Earth waa mid aad u halis ah. heerkulka Earth Global dhibciyo at 8 ⁰ C, taasoo keenta da'da barafka. Laakiin si ay u keeni eynu aadanaha, asteriyoodh waa in ay 10 jeer ka weyn.

khatar Rafaa

Recently, saynisyahano ayaa lagu ogaaday in liiska ay suurtogalka ah dhulkeenna in ay ka mid centaurs - asteriyoodh a Rafaa ballaciisu yahay ee 50 ilaa 100 km. duurka ku gravitational oo ka mid ah meerayaasha kale 40-100 milyan oo sano kasta oo dalkeeda ka jihada of our Earth. Tiradooda ayaa kordhay hadda. Waxaa laga yaabaa in haddii asteriyoodh a Rafaa in Earth mustaqbalka dhow, saynisyahano si joogto ah loo xisaabiyaa, inkastoo xisaabinta dhabbihii ee dayrta ee centaur ah - shaqo aad u adag.

Intaa waxaa dheer, liiska khataraha ka iman kara in Earth ka mid ah:

• qarax supervulkanicheskoe;
• caamka ah ee caalamka,
• asteriyoodh (0.00013 in%);
• dagaal nuclear,
• musiibada deegaanka.

Haddii asteriyoodh ku dhici doontaa in Earth ee October 2017?

Arinka u muhiimsan, oo uu hadda ka walaacsan la saynisyahano - khatar ka asteriyoodh ah, xajmiga oo 2 jeer ka badan meteorite Chabrovsk. Waxaa jira ixtimaal ah in dhacdo dhici doona October 2017, taas oo keeni doonaa belaayooyin a aad u balaaran oo baaxad badan ku dhuftay sannadkii 2013. Astronomer Judith Rice ku doodaysaa in dhexroor asteriyoodh ee gaadho 40 km. Uu wax loogu magac daray WF9.

jirka jannada khatar la ogaaday by saynisyahano ee Hawaii ku soo laabtay 2012. In sano in uu ahaa meel fog aad ugu dhow ka Earth, iyo October 12, 2017 dhawi ugu khatarsan iman doonaa, waayo, meel fog dhulkeenna ee. Qubarada badankooda ayaa aaminsan in haddii asteriyoodh si Earth runtii qaadataa meel, waxa marka hore la arki doonaa by British ah.

Waqtigan xaadirka ah, saynisyahano si firfircoon waxbarashada suurtagalnimada ee isku dhaceen. Si kastaba ha ahaatee, jaaniska ah asteriyoodh si Earth waa mid aad u yar yar iyo waa, sida laga soo xigtay cilmi, 1 million a. Si kastaba ha ahaatee, waa weli waxaa.

khatar joogto ah

Waa in la ogaadaa in si joogto ah u soo duuli astiriyoodhada qaar ka mid ah tirada kala duwan by Dhulka. Waxay khatar yihiin, laakiin aad u dhif ah runtii ku dhacaan dhulka. Sidaas daraaddeed, dhamaadka 2016-ka ayaa u duulay ee la soo dhaafay dhulka ka fog jidhka 2/3 masaafada u of moon, size ee gaari yar.

Oo January 2017 ayaa la calaamadeeyay Cararid jidhka ah jannada, oo gaarey size ee dhismaha 10-dabaq ah. Waxaa duulay 180,000 km naga gudahood.