Inouye Solar Telescope reveals ubiquitous Kelvin–Helmholtz vortices across solar photosphere
The U.S. National Science Foundation’s Daniel K. Inouye Solar Telescope has provided the first experimental confirmation of magnetized Kelvin–Helmholtz instabilities in the solar photosphere, resolving vortex structures at about 19 km (12 miles) in observations near NOAA active region 14060 on April 14, 2025. The Nature study, published August 5, 2026, analyzed 47 vortices with a characteristic wavelength of 65 km (40 miles), sizes of 25–170 km (16–106 miles) and apparent horizontal speeds of 0.67–3.0 km/s (0.42–1.86 miles/s).


