Rare meteorite impact caused dinosaur extinction

A rare meteorite, a CO-chondrite, struck Earth 66 million years ago, causing the dinosaur extinction. This finding challenges previous assumptions about the catastrophic event. An international research team identified the specific type of meteorite responsible for the Chicxulub impact. Analysis of nickel isotopes in global clay layers confirmed it was a CO-chondrite, a very uncommon primitive meteorite. This discovery suggests that fine dust, rather than sulfur, was the primary cause of the mass extinction. The rarity of the impactor and the specific circumstances of the strike highlight a series of unfortunate events for the dinosaurs.