PBS Space Time PBS Space Time

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
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