Sabon gano tsarin hasken rana
Ƙananan wurare na graphite a cikin lu'ulu'u na zircon na Australiya (1) wanda masanin ilimin lissafin Amurka Mark Harrison (XNUMX) ya gano ba wai kawai ra'ayoyin da suka gabata ba game da asalin rayuwa a duniya. Suna kuma tilasta mana mu canza tunaninmu game da tsarin hasken rana ...
1. Biogenic burbushi 4,1 biliyan da suka wuce
Da yawa! Alamun kwayoyin halitta da masanin kimiyyar ya gano a cikin duwatsun sun kasance shekaru biliyan 4,1. Wannan yana canza salon rayuwa a duniyarmu ta shekaru miliyan 300 da suka wuce.
Matsalar ita ce, yanayin da ya kasance a Duniya a lokacin bai dace da halitta ko kuma don kiyaye rayuwa ba. A lokacin, akwai wani jahannama na gaske a nan, mai zafi da jajayen lafa da duwatsu masu aman wuta, tarkacen sararin samaniya (2). To me yasa?
Sam Tsarin hasken rana (3) bayan haka, bai fi girma ba. A bisa ka’idojin gargajiya, ya fara samuwa ne daga gajimare na kura da duwatsu da suka ruguje a karkashin tasirin nauyi, wanda ya haifar da Rana kimanin shekaru biliyan 4,6 da suka wuce. Sa'an nan, yayin da girgijen da ke kewaye da tauraron ya yi sanyi, taurari sun fara samuwa.
2. Proto-Earth - gani
3. Taurari na tsarin hasken rana, wata da Rana
A cikin mahallin binciken Harrison, lokaci ya yi da za a ƙirƙiri yanayin da ya dace don bullowar rayuwa, musamman tunda ƙirar gargajiya suna magana game da manyan bama-bamai na asteroid waɗanda suka mamaye tsarin duniyar wata.
