Me kuke tunani, da yadda tsohon ne Duniya?

A daidai amsar wannan tambaya, muna iya shakkar aukuwarsa ya taba iya. Daga zamanin da, mutumin da aka sha'awar wannan tambaya: "Ta yaya tsohon ne Earth." Amsoshin wannan tambaya ta zo mana a cikin irin camfin, Legends. Daga mai kimiyya batu na masana kimiyya ya fara duba zuwa ga wani amsar kadan fiye da shekaru hudu da suka wuce, a lokacin da akwai, da kuma fara karfafa heliocentric ka'idar da hasken rana tsarin. Don gano yadda tsohon cikin Duniya, ya wajaba a fara amsa tambaya: "Yaya ne aka hasken rana tsarin, daya kashi na wanda aka dauke su mu duniyarmu?". Shi ne da na uku duniya daga rana. A halin yanzu, da shahararrun ne biyu na Sun kuma taurari bayyanar bane wanda zai iya gaya mana yadda tsohon cikin Duniya.

A farko, da ake kira nebula jarrabawa bayar da hujjar cewa kafin hasken rana tsarin giant size wanzu a sarari zafi gas girgije cewa an rage a cikin size, ejecting manyan clumps gas. Gas girgije, da ragewa a cikin size, ya juya a cikin rana, kuma babbar clumps na gas, fuskanto, ya juya a cikin taurari, daya daga wanda ya zama mu Earth.

Wani ka'idar, wanda kuma kokarin share sama da tambaya na yadda tsohon cikin Duniya da ake kira da planetesimal. A cewar wannan ka'idar kafin rana da ƙasa a cikin sarari, akwai wata babbar tari na gwada da kananan size dangane da daskararru, wanda masana kimiyya kira planetesimals, da rãnã da aka a tsakiyar taro. Lokacin kusa ga wannan tari na jikin tashi girma star wannan taro m tafi a karkashin karfi na nauyi na wani m star. Sassa na wadannan, bi da bi, ya fara jawo hankalin kananan planetesimals. Wannan shi ne irin yadda da hunturu snow sandunansu zuwa babban snowball. Saboda haka bisa ga wannan ka'idar fito duniya, mu duniya, daga gare su.

Wanne daga cikin wadannan biyu theories mafi daidai, ba mu sani ba, amma ko da wannan, Taurari, amsa tambaya game da yadda shekaru masu yawa da Earth lasafta cewa, ta kasance game da biyar da rabi shekaru biliyan. Amma a kimiyya don haka shi ne yarda da cewa, domin karanta bayanai gaskiya, dole ne a tabbatar da wasu kafofin. More daidai bayanai da aka samu ta hanyar Hanyar radiometry. A cewar wadannan bayanai, yana da shekaru da Duniya da aka kafa a matsayin 4,54 shekaru biliyan ± 1%. A sakamakon da fasahar zamani da kuma ci gaban radiometric hanyoyin bayyana cewa, wasu samfurori da ma'adanai a Duniya shekaru daban-daban fiye da biliyan daya da shekaru. A Australia, da muka samu zircon lu'ulu'u, wanda shekaru da aka ƙaddara ta wannan hanya da kuma shi da aka samu ya zama game da biliyan 4 m 404 shekaru miliyan! Bisa ga wadannan facts, kuma ba da taro kuma luminosity rãnã da sauran taurari, da masu bincike zo ga ƙarshe cewa shekaru na hasken rana tsarin da, sabili da haka, Duniya ba zai iya zama da yawa fiye da shekaru na lu'ulu'u ne.

A meteorites samu concretions da wani babban abun ciki na alli da aluminum. Shi ne mafi sani ga kimiyya samfurori kafa a cikin hasken rana tsarin. Su shekaru, masana kimiyya bayyana a matsayin 4,567 shekaru biliyan. Wannan zai zama na sama da iyaka shekarun duniya, da za su taimake mu amsa wannan tambaya na yadda da yawa Duniya shekaru.

Masana kimiyya zargin cewa game da miliyan goma shekaru bayan bayyanar da duniyarmu, ta yi ta kansa tauraron dan adam - da Moon, wanda ya fara doguwar a kusa da duniya, kuma haka tasiri cikin ebb da ya kwarara daga tekuna da kuma tekuna, gudun juyawa na duniya. A lokaci guda, ya zama m karkata daga cikin Duniya ta axis.

The taimako na Duniya domin biliyoyin shekaru na zama ya canza da yawa, ciki har da ta dalilin da fall na meteorites, da most of wanda zai iya tasiri cikin sauyin yanayi a duniya, kai ga samuwar na tabkuna, tsibiran da tekuna.