The discovery of ruthenium isotopes in the Chicxulub impact layer provides definitive evidence that the impactor was a carbonaceous asteroid, a rare type of space rock.
Research scientist Mario Fischer-Godde stated that the isotopic signature of ruthenium across the K-Pg boundary is a clear indicator of the impactor's origins.
This new finding challenges previous debates over whether the Chicxulub impactor was a comet or asteroid, cementing its classification as a carbonaceous asteroid.
The uniform ruthenium signature detected in global debris layers strengthens the argument that the rock responsible for the dinosaurs' demise was asteroid in nature.
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