The Core of the Problem: Why Our Magnetic Field is Weakening
The Core of the Problem: Why Our Magnetic Field is Weakening  
Podcast: Bedtime Astronomy
Published On: Wed Oct 22 2025
Description: The Earth's protective magnetic field is changing. Data from the ESA Swarm mission reveals that the South Atlantic Anomaly, a vast weak spot in our planetary shield, is expanding and rapidly weakening. Learn what's causing this shift—and why it matters for our satellites and technology.