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Astronomy

Stellar Dynamos: How Convection Generates Magnetic Fields in Main-Sequence Stars

Quick fact

The Sun's magnetic field, which powers sunspots and drives the 11-year solar cycle, is generated not by a solid magnet but by the continuous churning of ionized gas in its outer third, with the process responsible known as a stellar dynamo.

Why this is interesting

You've seen the dark spots on the Sun, but have you ever wondered what creates them? They're not just blemishes—they're signs of a hidden magnetic engine driven by the Sun's churning plasma.