Alvarez et al. waxay soo jeediyeen in kororka degdegga ah ee heerarka iridiyam, oo laga diiwaan geliyey adduunka oo dhan ee lakabka dhagaxa ee muddadaas, ay ahayd caddeyn toos ah oo ku saabsan saameynta. Inta badan caddaynta hadda waxay soo jeedineysaa in bolide 5 illaa 15 kiiloomitir (3.1 illaa 9.3 mayl) ballaaran uu ku dhacay agagaarka Jasiiradda Yucatán (ee koonfur-bari Mexico), oo abuuray qiyaastii 180 km (110 mi) Chiculub Crater oo kali ah oo kiciyay dabar go'i ballaaran. Saynisyahannadu ma hubin in dinosaur-yada ay ku guuleysteen ama hoos u dhaceen ka hor inta aysan dhicin. Saynisyahannada qaarkood waxay soo jeedinayaan in saameynta meteorite ay sababtay hoos u dhac aan dabiici ahayn ee heerkulka dhulka ee qiyaastii 66 milyan oo sano ka hor.
Jasiiradda Yucatán