Here’s the latest consensus on the Chicxulub impactor size:
- Most recent scientific estimates place the asteroid’s diameter at about 10 to 15 kilometers (roughly 6 to 9 miles). This size is inferred from the ~180–200 kilometer Chicxulub crater that it left in the Yucatán Peninsula.[2][8]
- Some outlets and summaries have also cited a commonly quoted range around 9–12 kilometers (about Mount Everest-scale comparisons) as a visual guide to its scale, but the consensus remains within the 10–15 km range based on crater and impact modeling.[4][8]
If you’d like, I can pull more recent primary sources or provide a concise comparison of different estimates and the crater-based reasoning behind them. I can also summarize what this implies for the energy released and global effects.[8][2]
Sources
Nasa confirmed its spacecraft successfully collided with a 170-metre wide asteroid just after midnight today
www.standard.co.ukThanks to the presence of an rare element called ruthenium, scientists think they know where the asteroid that killed the dinosaurs came from.
www.businessinsider.comEver wanted to know how big was the asteroid that killed all the dinosaurs and destroyed the Earth as it existed then? Thanks to NASA, we know the size of this Earth-killer asteroid.
tech.hindustantimes.comAUSTIN, Texas — Researchers believe they have closed the case of what killed the dinosaurs, definitively linking their extinction with an asteroid that
news.utexas.eduEver wanted to know how big was the asteroid that killed dinosaurs and destroyed the Earth as was existing then? Thanks to NASA, we know the size of this Earth-killer asteroid.
tech.hindustantimes.comThe impactor was around 10 kilometers (6.2 miles) in diameter—large enough that, if set at sea level, it would have reached taller than Mount Everest.
www.studycountry.comUncover the immense scale of the Chicxulub impact. Explore the colossal forces and physical transformations unleashed by this ancient cosmic event.
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