From the abstract of the paper the article is based on: " Our data indicate that the Chicxulub impactor was a carbonaceous-type asteroid, which had formed beyo

From the abstract of the paper the article is based on: " Our data indicate that the Chicxulub impactor was a carbonaceous-type asteroid, which had formed beyond the orbit of Jupiter. The five other impact structures have isotopic signatures that are more consistent with siliceous-type asteroids, which formed closer to the Sun. The ancient spherule layer samples are consistent with impacts of carbonaceous-type asteroids during Earth’s final stages of accretion. " The link to the paper itself: https://www.science.org/doi/10.1126/science.adk4868 https://www.science.org/doi/10.1126/science.adk4868