Ososayensi abamele iHarvard University baphakamisa ukuthi "ukubulala" kwama-dinosaurs kwakuyingxenye ye-comet eyavela emaphethelweni onozungezilanga. I-COSMIC Drummer yayiyingxenye yento eshumeke ngokudonsela phansi kwe-jupiter kwinkambo ephethwe yikhanda.
Ngokusho kocwaningo olusha, umzimba wosayizi omkhulu, obudale ukushona kwezifo ezinkulu, kwakungeyona i-asteroid phakathi kweJupiter neMars, njengoba abanye ososayensi bekholelwa. Ngokusho kwababhali bomsebenzi wesayensi, into yasezulwini yayiyingxenye ye-comet evela efwini le-Oort. Ama-Comets okufunda enza umbuthano owodwa uzungeze amakhulu eminyaka. Imiphumela yezifundo ezedlule ikhombisa ukuthi amathuba okuwela indlela yezwe lama-comets incane kakhulu.
Njengengxenye yomsebenzi owenziwayo, imiphumela yasungulwa kule ndatshana ngemibiko yesayensi, ikwazile ukuthola ukuthi: Ukudonsela phansi kukaJupiter kungashukumisela kuze kufike ku-20% comet eduze kwelanga, lapho kwenzeka khona igebe lakhe. Izingxenye ezihlukanisiwe zingama-10 amathuba amahlandla ayi-10, ngokungafani nezinye izakhiwo zefu le-Oort, zimangaza umhlaba. Abaphenyi abamele i-University of Texas e-Austin bangathola ukuthi isivakashi sasezulwini saba yisondzela ka-9.6 km bese sishaya iplanethi ngejubane elingama-71,840 km / h. Ukuwa kwento ye-cosmic ekugcineni kwenkathi yesikebhe kuholele ekwakhekeni kwe-crater, ububanzi bawo bangamakhilomitha ayi-180. Umzila omkhulu watholwa eduze kwedolobha lesimanje laseChiksulub (Mexico).
Imvelaphi yesikhungo sethonya, esishiya umzila omkhulu endaweni ye-Yucatan peninsula, ayaziwa. Ngokwezinguqulo ezithile, eminyakeni eyizigidi eziyi-160 eyedlule, ngenxa yokushayisana kwama-asteroid, kwavuka i-meteorite, eyadale ukunqotshwa kwe-dinosaur. Ngemuva kokuhlaziywa kwezwe le-crater, i-chiksululub yatholakala ukuthi umzimba we-cosmic uyi-chondrite ye-carbonal - uhlobo lwe-meteors, olungenza cishe ama-10% enani lama-asteroid osukholwe ebhande eliphambili. Abalobi bomsebenzi, izazi zezinkanyezi AVI Leb no-Amir Siraj bakholelwa ukuthi kungenzeka ukuthi iningi lezinto ezivela efwini le-Oort linokwakheka okufanayo.