A ten-country team led by researchers at TU Braunschweig and the University of Tokyo used high-precision magnetic-field and particle data from NASA's Parker Solar Probe to demonstrate the first direct reversal of magnetic rotation in solar-wind turbulence. Viewed radially away from the Sun, large-scale fields preferentially rotate counterclockwise, while smaller wavelengths rotate clockwise. The reversal shifts toward longer wavelengths farther from the Sun and coincides with the transition from fluid-like to particle-like plasma dynamics. The work appears in The Astrophysical Journal Letters. The mechanism can improve understanding of shock waves and magnetic clouds from solar eruptions and may strengthen geomagnetic-storm physics, but it remains basic research rather than an operational forecasting tool with proven accuracy gains.