Meteorite - da gaske ne a harbi star?

Daga lokaci zuwa lokaci a kan wannan duniya tamu suna fadowa daban-daban basamaniyai. Su ne babban da kuma kananan, ganuwa da kuma m, da baƙin ƙarfe, da silicate, wani m iri-iri. A kimiyya sunan wani harbi star - a meteorite. Wannan definition ya shafi for jikin fi girma fiye da 10 microns. Karami sarari, baƙi ake kira micrometeorites.

Menene meteorites

Kusan 93% na meteorites ne dutse. Daga cikin su akwai chondrites, kunsha na silicate duniyoyin (talakawa, carbonaceous da enstatinovye) da kuma achondrites, da narkewa da rakiyar bambantawa a abun da ke ciki to silicates da karafa. Sauran jiki ne zuwa kashi baƙin ƙarfe-dutse (pallasites da mesosiderites) da kuma m baƙin ƙarfe.

Yana da muhimmanci a nuna cewa meteorite - shi ne ba a meteor. Wadannan sharuddan koma zuwa daban-daban abubuwa. Meteorite kira jiki kai tsaye, da kuma meteor - wuta hanya kafa a cikin yanayi a lokacin da fall. Shi ne kuskure na "harbi star", wanda yin buri romantically shiryayye mutum.

girma meteorites

Girma meteorites iya zama sosai daban-daban. Wasu daga cikin su tare da hatsi da yashi, wasu - kai dubun ton. Wakilai daga cikin kimiyya al'umma da'awar cewa a wannan shekarar a duniya tamu samun 21 ton na Extraterrestrial jikinsu, da wakilan da suka kwarara iya auna daga 'yan grams har zuwa 1000 kg.

The most meteorites a cikin tarihin duniya

Sutter ta Mill fadi to Earth Afrilu 22, 2012. HanyarSa jagoranci kan Nevada da California, da kuma kudi wuce 29 kilomita ta biyu. Sama wadannan jihohi daga cikin meteorite m tafi sassa daban-daban masu girma dabam, babban bangare ya kai Washington da kuma fashe a sama da shi. Ikon da fashewa da aka daidaita 4000 ton na TNT. Masana kimiyya da aka sani da shekaru cikin wani sarari suKe wanderer - fiye da 4,500 shekaru miliyan.

A Peru, kusa da Lake Titicaca da kuma kusa da Bolivia iyaka, 15 Satumba 2007 akwai fada na cosmic jiki, niƙaƙƙun gaɓãɓuwa na wanda aka samu. Ya cika da a cike da laka ruwa ya faru kawai ya nuna ramin zurfin 6 mita da kuma diamita na 30. A lokacin da hadari, bisa ga shaidar gida mazauna, da ruwa Boiled marmaro. Akwai ka'idar cewa wani meteorite da poisons, tun da filin da ya fall daga shaidu fara karfi migraine.

A cikin watan Yuni 1998, 20th rana, game da Harshen Turkmen birnin Old Urgench a auduga filin sarari komai a fili bako yin la'akari 820 kg. A diamita na bakin dutse ya game 5 mita. International Society of meteorite kirga shekaru na jiki - fiye da biliyan 4 years old - da kuma same shi da most of duk da cewa ya fadi a cikin CIS, da kuma na uku mafi girma a duniya.

Mayu da dare a cikin 1990, daga 17 zuwa 18 da lambar, ashirin kilomita daga Sterlitimak ragu 315-laba meteorite. Wannan taron ya faru a jihar Farm filin, a cikin abin da ƙasa da aka kafa 10-mita bakin dutse. A wannan yanayin da matsanancin jiki da kanta da aka ɗora Kwatancen a cikin ƙasa a 12 m.

The most samu meteorite aka dauke Namibia. Wannan wata mu'ujjiza da baƙin ƙarfe Goba sunan, da kuma yana da damar 9 cubic mita da kuma wani nauyi na 66 ton. Ya fall faru 80,000 da suka wuce, amma kawai samu wannan mashaya a 1920. Yanzu ya ne a gida alama.