# Solar Radio Bursts Expose Magnetic Secrets Near the Sun
The Parker Solar Probe has detected radio bursts that reveal previously hidden magnetic structures in the sun's atmosphere. These bursts originate from electrons traveling at nearly the speed of light through the corona and heliosphere, the regions closest to the sun.
Electrons follow magnetic field lines as they move through solar plasma, generating radio waves through a process called plasma emission. By analyzing the radio signals, researchers identified magnetic switchbacks, sharp reversals in the sun's magnetic field that scientists had not fully understood before.
This discovery matters because magnetic switchbacks influence solar wind behavior and space weather that affects Earth. Understanding their location and structure helps predict dangerous solar events that could impact power grids, satellites, and communications systems.
The Parker Solar Probe, launched in 2018, operates closer to the sun than any spacecraft in history. Its instruments detect subtle radio emissions that ground-based telescopes cannot capture. Researchers will continue analyzing burst data to map more magnetic structures and refine models of solar activity.
The findings establish radio bursts as a diagnostic tool for studying the sun's hidden magnetic architecture in real time.