This podcast explores the possibility of a killer asteroid hitting Earth, with discussions on the Chelyabinsk impact and the risk of asteroids. Scientists track the Duende asteroid's orbit and discuss the dangers of larger asteroids. NASA's Dart mission and alternative methods to deflect asteroids are also explored. The hosts share random facts, tease the next season, and give a shoutout to the 'Science Friction' podcast.
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Quick takeaways
The podcast discusses the challenges of asteroid detection and tracking, highlighting the shock and confusion among scientists who missed the unexpected Chelyabinsk asteroid.
The podcast explores NASA's DART mission, which involves deliberately crashing a spacecraft into an asteroid to alter its course and prevent a collision with Earth, showcasing the importance of precise calculations and measurements in hitting a fast-moving asteroid.
Deep dives
The Close Encounter with Asteroid Duende
The podcast recounts a close encounter with the asteroid Duende, which scientists tracked and expected to come close but not hit Earth. However, while researchers in Vienna were preparing for the anticipated event, a different asteroid, Chelyabinsk, exploded over Russia. The podcast explores the shock and confusion among scientists who missed the unexpected asteroid and discusses the challenges of asteroid detection and tracking.
Defending Against Medium-Sized Asteroids
The podcast introduces NASA's DART mission, which aims to address medium-sized asteroids that could cause significant damage to cities. DART involves a spacecraft deliberately crashing into the target asteroid to alter its course, with the goal of preventing a collision with Earth. The podcast explains the technological intricacies and challenges involved in hitting a fast-moving asteroid and highlights the importance of precise calculations and measurements.
Challenges of Dealing with Large Asteroids
The podcast discusses the potential threats posed by large asteroids and explores possible strategies to defend against them. While nuking an asteroid is not ideal due to the risk of creating smaller fragments, scientists propose using nuclear devices to heat and vaporize the asteroid's surface, exerting pressure that can alter its trajectory. The podcast emphasizes the need for early detection and planning, as redirecting large asteroids requires a slow and careful process. The rarity of large asteroid impacts is highlighted, but scientists continue studying and preparing for such low-probability events.
This week — asteroids. Could a space rock really slam into us and destroy the world? And if we did spot one heading straight for us, is there anything we could do to stop it? We speak with asteroid researcher Dr. Alan Harris, astrophysicist Dr. Sergey Zamozdra, computational physicist Dr. Cathy Plesko, and physicist Dr. Andy Cheng.
This episode was produced by Wendy Zukerman along with Lexi Krupp with help from Michelle Dang, Meryl Horn and Rose Rimler. We’re edited by Caitlin Kenney. Fact checking by Michelle Harris. Mix and sound design by Peter Leonard. Music written by Peter Leonard, Bobby Lord and Emma Munger. Recording assistance from Verónica Zaragovia, Sofi LaLonde, Lawrence Lanahan, and Kevin Caners. Translation help from Andrew Urodov and Dmitriy Tuchin. Thanks to all the scientists we spoke to: Dr. Carrie Nugent, Dr. Mark Boslough, Dr. David Kring, Dr. Daniel Durda, Dr. Kelly Fast and the other Dr. Alan Harris. A big thanks to Carl Smith at The Australian Broadcasting Corporation for suggesting this topic - Carl did a podcast series on a bunch of the Apocalypse scenarios! You can find it at the podcast Science Frictionand search for the Apocalypse series. And thanks to the Zukerman Family and Joseph Lavelle Wilson.