Tuesday, June 30, 2026

PBS Eons explains 'How We Figured Out an Asteroid Killed the Dinosaurs' for Asteroid Day

Happy International Asteroid Day, the younger but paradoxically more established version of Apophis Day! For this year's observance, I'm sharing PBS Eons explaining How We Figured Out an Asteroid Killed the Dinosaurs.

66 million years ago a giant space rock crashed into our planet and killed the dinosaurs. In the span of just four decades, we’ve gone from not knowing there was a space rock at all to knowing exactly where that planet-killer came from.
I've been following this story for as long as I've been a geologist, but I still learned new things from this video, or at least was reminded of things I'd forgotten, like Luis Alvarez having earned a Nobel Prize in Physics. I will say I was skeptical at first, but by the time I earned my M.S., I was convinced.

Be Smart has more from Inside the Vault Where They Keep the Dinosaur Apocalypse.

A giant asteroid impact ended the age of the dinosaurs 66 million years ago. How did this mass extinction play out, moment by moment? In this video we meet a geologist who has explored the asteroid crater and learn what the rocks tell us about the last days of the dinosaurs. It was pretty bad!
Not only did Dr. Joe Hanson and Sean Gulick describe the details of what we now know about the Chicxulub impact and its effects, Joe concluded with a "so what" message. Unlike the dinosaurs, we have a choice.

That's a wrap for June's blogging. Stay tuned for Canada Day to begin July.

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