Saynis yahanadu waxay ogaadeen in saddex meteorites ay ka kooban yihiin walxaha dhismaha kiimikada ee DNA iyo saaxiibkiisa RNA. Qayb ka mid ah qaybahan dhismaha ayaa hore looga helay saadaasha hawada, laakiin inta soo hadhay ururinta ayaa si cajiib ah uga maqnayd dhagaxyada hawada sare - ilaa hadda.
Sida laga soo xigtay cilmi-baarayaasha, daahfurka cusub wuxuu taageersan yahay fikradda ah in afar bilyan oo sano ka hor, duqeynta meteorites laga yaabo inay bixiso walxaha kiimikaad ee loo baahan yahay si ay u bilaabaan abuuritaanka nolosha ugu horreysa ee Dunida.
Si kastaba ha ahaatee, qof kastaa ma rumaysna in dhammaan qaybaha DNA-da ee dhowaan la helay ay asal ahaan ka baxsan yihiin dhulka; halkii, qaar ayaa laga yaabaa inay ku dhamaadeen meteorites ka dib markii dhagaxyadu ku soo degeen Earth, sida uu qabo Michael Callahan, oo ah farmaliye falanqeeye, astrobiologist, iyo borofisar ku-xigeenka Jaamacadda Boise State University oo aan ku lug lahayn daraasadda. "Daraasad dheeri ah ayaa loo baahan yahay" si meesha looga saaro suurtagalnimadan, ayuu Callahan u sheegay Sayniska Live email ahaan.
Iyadoo loo maleynayo in dhammaan xeryahooda ay ka soo jeedaan meel bannaan, hal qayb oo ka mid ah dhismooyinka dhismooyinka ayaa xiraya fasalka xeryahooda loo yaqaan - pyrimidines waxay u muuqdeen "xoojin aad u hooseeya" ee meteorites, ayuu raaciyay. Natiijooyinkan ayaa tilmaamaya in unugyadihii ugu horreeyay ee hidde-sideyaasha dunidu aanay soo shaac bixin sababta oo ah qaybaha DNA-da oo ku soo qulqulaya meel bannaan, balse taa beddelkeeda ay sabab u tahay geeddi-socodyada juqraafiyeedka ee horraantii Dunida, ayuu raaciyay.
Waqtigaan la joogo, si kastaba ha ahaatee, "waa ay adag tahay in la yiraahdo" waxa diiradda saaraya dhismaha DNA-da ee meteorites-ka ayaa u baahnaan lahaa si ay u xakameeyaan si ay u caawiyaan soo ifbaxa nolosha Dunida, sida uu qabo Jim Cleaves, geochemist iyo madaxweynaha Ururka Caalamiga ah ee Bulshada Barashada Asalka Nolosha ee aan ku lug lahayn daraasadda. Arintan wali waa la eegayaa.
