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The Asteroid That Killed the Dinosaurs Was Stranger Than We Thought
Scientists are narrowing down the type of space rock that caused the mass extinction at the end of the Cretaceous period, and new research suggests it was no ordinary rock.
The Chicxulub impactor, the space rock that struck what is now Mexico 66 million years ago, left behind an enormous crater but almost nothing of itself. The collision vaporized the space rock and triggered a mass extinction that wiped out 75% of Earth’s species, including the non-avian dinosaurs. To work out what hit the planet, scientists have had to examine tiny traces preserved in a thin layer of clay around the world.
A rare metal has traced the dinosaur-killing asteroid beyond Jupiter, and the discovery narrows a 66-million-year-old mystery
Home – Science – A rare metal has traced the dinosaur-killing asteroid beyond Jupiter, and the discovery narrows a 66-million-year-old mystery
For years, scientists were convinced that they knew what killed the dinosaurs. The explanation was: About 66 million years ago, an enormous asteroid hit Mexico and killed three-quarters of all species, including all dinosaurs except birds.
What was still not clear was where the asteroid had come from. A study carried out in 2024 offered a possible explanation. Its chemical composition indicated it could have been a carbon-rich asteroid formed beyond the planet Jupiter. This gave researchers very strong evidence about its origin, and got closer to answering a question that had remained unanswered although the impact theory was widely accepted.
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