PBS Space Time PBS Space Time

Will The Sun's Magnetic Poles Flip This Year?

Oct 31, 2026 · 22m

Summary

PBS Space Time explores the unexpected intensity of the current solar cycle, which is far stronger than predicted despite historical trends toward weakening. The episode details the solar dynamo mechanism, explaining how differential rotation and magnetic buoyancy generate sunspots and coronal mass ejections. It also examines how scientists use geological records to track ancient solar activity and discusses why forecasting the strength of future cycles remains challenging due to complex magnetic reconnection processes.

Topics discussed

Sponsors: LinkedIn, Chrome, and Incogni intro May 2024 solar storm and unexpected cycle intensity Why the 25th solar cycle is defying predictions Solar structure: core, radiative, and convective zones The solar dynamo and differential rotation effects Sponsors: LinkedIn and Chrome ads Omega process and magnetic buoyancy mechanics Coriolis force, alpha process, and sunspot formation Sunspot migration, butterfly diagrams, and CMEs Magnetic field polarity reversal and cycle reset Sponsors: LinkedIn, Chrome, and Bose ads Why cycles last 11 years and geological evidence Historical solar minima and the modern maximum Predicting cycle strength and the 2019 forecast error Sponsors: LinkedIn, Chrome, and Bose ads Future outlook for solar activity and auroras Sponsor: Incogni data privacy service PBS Space Time Higgs boson limited edition merch Sponsor: Bose headphones Sponsors: Checkout.com and Sweetgreen
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