StarDate

Killer Crater


Listen Later

There’s a renewed debate these days about what killed the dinosaurs. Most scientists say it was an asteroid that slammed into the Gulf of Mexico. A few say it was giant volcanoes. And some say it was a combination of the two.

Regardless of whether it was the dinosaur killer, though, there’s no doubt the asteroid impact put on quite a show. It gouged a giant crater, blasted billions of tons of debris into the atmosphere, and created a tsunami that rolled all the way to central Texas.

The crater is known as Chicxulub. It’s centered just off the Yucatan Peninsula. It’s about a hundred miles wide and a dozen miles deep.

A few years ago, researchers drilled into a ring of mountain peaks inside the crater’s rim. The rocks revealed what happened when the miles-wide asteroid hit.

The high temperature and pressure excavated an initial crater about 20 miles deep. For about 10 minutes, the ground around the impact site acted like a fluid, with rocks flowing down the sides of the crater. But with the rock above it gone, the crater floor pushed upward. Granite from deep below the surface flowed up, then out, forming the ring of peaks.

Melted rock formed a thick layer at the bottom of the crater. Some of the rock that was blasted into the air fell into the crater as well.

Nothing survived the impact for hundreds of miles around. Yet life began returning to the site within a few years — new life at a site of mass destruction.

Script by Damond Benningfield

...more
View all episodesView all episodes
Download on the App Store

StarDateBy Billy Henry

  • 4.6
  • 4.6
  • 4.6
  • 4.6
  • 4.6

4.6

251 ratings


More shows like StarDate

View all
Science Friday by Science Friday and WNYC Studios

Science Friday

6,133 Listeners

BirdNote Daily by BirdNote

BirdNote Daily

1,190 Listeners

Planetary Radio: Space Exploration, Astronomy and Science by The Planetary Society

Planetary Radio: Space Exploration, Astronomy and Science

1,345 Listeners

Radiolab by WNYC Studios

Radiolab

43,969 Listeners

Astronomy Cast by Fraser Cain and Dr. Pamela Gay

Astronomy Cast

2,866 Listeners

The 365 Days of Astronomy by 365DaysOfAstronomy.org

The 365 Days of Astronomy

336 Listeners

Universe Today Podcast by Fraser Cain

Universe Today Podcast

544 Listeners

Ask a Spaceman! by Paul M. Sutter

Ask a Spaceman!

804 Listeners

Space Nuts: Astronomy Insights & Cosmic Discoveries by Professor Fred Watson and Andrew Dunkley

Space Nuts: Astronomy Insights & Cosmic Discoveries

223 Listeners

SpaceTime: Your Guide to Space & Astronomy by Stuart Gary

SpaceTime: Your Guide to Space & Astronomy

320 Listeners

Short Wave by NPR

Short Wave

6,273 Listeners

The Supermassive Podcast by The Royal Astronomical Society

The Supermassive Podcast

287 Listeners

NASA's Curious Universe by National Aeronautics and Space Administration (NASA)

NASA's Curious Universe

851 Listeners

Why This Universe? by Dan Hooper, Shalma Wegsman

Why This Universe?

363 Listeners

Crash Course Pods: The Universe by Crash Course Pods, Complexly

Crash Course Pods: The Universe

505 Listeners