Ka taƙaita labarin:  Rayuwa a duniya ta fara ne ta hanyar jerin halayen sinadarai da aka haifar da abubuwa biyu masu sauki amma masu guba wadanda suka kasance masu yawa a duniyarmu shekaru biliyan hudu da suka gabata. Masana sunadarai sun yi iƙirarin cewa a ƙarshe sun warware asirin yadda rayuwa ta fara a duniya. Sun gano cewa zai yiwu a ƙirƙiri abubuwa uku da suke gina rayuwa - DNA, sunadarai da kuma kitse - daga hydrogen cyanide, hydrogen sulphide da kuma hasken ultraviolet. Tasirin meteorite, kamar wanda ke cikin hoton da ke sama, na iya haifar da ƙirƙirar hydrogen cyanide wanda masana kimiyya suka gano zai iya ƙirƙirar manyan abubuwa uku na haske a cikin halayen da hasken rana ke amfani da shi. Binciken da suka yi ya nuna cewa abubuwan da ke cikin ƙwayoyin halitta sun fito ne a lokaci ɗaya a cikin tafkuna da koguna na dā, kuma sun haɗu don su zama ƙwayoyin halitta na farko. Wannan ya nuna cewa wataƙila rayuwa ta soma ne a nan duniya - daga guba mai guba - maimakon wani tauraron tauraro ko kuma wani abu da ya faɗi daga sararin samaniya ya kawo ta duniyarmu. RNA yana nufin ribonucleic acid. Yana ɗaya daga cikin muhimman kwayoyin halitta guda uku da suke da muhimmanci ga dukan siffofin rayuwa da aka sani - da kuma furotin da kuma kitse. RNA ya samo asali ne daga tsararren nucleic acid, wanda shi ne ke gina DNA. Bayanan kwayoyin halitta a cikin tantanin halitta yana gudana daga DNA ta hanyar RNA zuwa sunadarai. Ana daukar DNA a matsayin 'blueprint' na tantanin halitta kuma RNA shine abin da ke taimakawa fassara shi. Wasu rayuka, kamar ƙwayoyin cuta, suna amfani da RNA ne kawai kuma ana tunanin cewa wasu daga cikin halittu na farko a duniya sun yi amfani da wannan kwayar. Ana ɗaukan sunadarai a matsayin ƙwararrun ƙwayoyin halitta da aka gina daga jerin amino acid. Waɗannan suna tafiyar da abubuwa da suke faruwa a cikin kwayar halitta kuma su ne suke sa rayuwa ta ci gaba. Lipids sune kwayoyin mai waɗanda suke layi a cikin tsari wanda zai iya ƙirƙirar ƙwayoyin kariya. Sun zama 'ganuwar' kowane kwayar halitta mai rai kuma suna ba ta tsari. Suna kuma da muhimmanci wajen aika saƙo daga cikin tantanin halitta. Amma masu binciken da ke bayan sabon binciken sun ce meteorite...
Masana kimiyya sun halicci abubuwan da suka dace da RNA, sunadarai da lipids a cikin halayen halayen. Gwajinsu ya yi amfani da hydrogen cyanide, hydrogen sulphide da hasken ultraviolet. Wadannan sunadarai sun kasance masu yawa a duniya shekaru biliyan 4 da suka wuce. Za'a iya samar da sinadarin hydrogen cyanide ta hanyar tarkacewar meteorite da ke hulɗa da nitrogen a cikin yanayin duniya a yayin da ake maimaita tasirin sararin samaniya. Gas na hydrogen sulphide mai yiwuwa an jefa shi ta hanyar fashewar volcanoes. Masana kimiyyar sunadarai ne suka gudanar da binciken a Laboratory of Molecular Biology na Hukumar Binciken Likitoci a Cambridge.