Will The Sun's Magnetic Poles Flip This Year?
Sep 17, 2026 · 23m
Summary
PBS Space Time explores why Solar Cycle 25 is significantly stronger than predicted, defying expectations of a weak cycle following the declining Modern Maximum. The episode details the solar dynamo, explaining how differential rotation and magnetic buoyancy generate sunspots and coronal mass ejections. It also discusses how scientists use ice core data to track historical cycles and why current forecasting models struggle to predict the intensity of the upcoming magnetic field reversal.
Topics discussed
Sponsors: LinkedIn, Instagram, and PBS Merch
May 2024 Solar Storm and Unexpected Activity
Solar Cycle 25: Stronger and Faster Than Predicted
Solar Structure: Core, Radiative, and Convective Zones
The Solar Dynamo Effect and Differential Rotation
The Omega Process: Twisting Poloidal to Toroidal Fields
Magnetic Buoyancy and Flux Tube Rising
The Alpha Process, Kinks, and Sunspot Formation
Butterfly Diagrams and Sunspot Migration
Magnetic Reconnection and Coronal Mass Ejections
Magnetic Polarity Reversal and Cycle Reset
Why the Cycle Takes 11 Years and Geological Records
Solar Minima: Maunder Minimum and Modern Maximum
Predicting Cycle Strength and the 2019 Forecast
Updated Models and Future Solar Activity Outlook
Sponsors: Incogni and LinkedIn
PBS Space Time Merch: Higgs Boson UV Glow Print
Sponsors: Uber Eats and Citizens/SVB
Sponsor: Anthropic
Listen ad-free on Castria