Inouye Solar Telescope captures highest-resolution images of Sun's surface

An international team of scientists has captured the highest-resolution images of the Sun’s surface to date, providing the first direct observation of the Kelvin-Helmholtz instability (KHI) on the solar photosphere. Using the National Science Foundation’s Daniel K. Inouye Solar Telescope in Maui, Hawaii, researchers identified small, swirling plasma whirlpools and feathery rippling patterns at the edges of magnetic regions.

KHI occurs when two layers of fluid or plasma move past each other at different speeds, creating shear that develops into wave-like patterns and vortices. While this phenomenon is common in Earth’s oceans and atmosphere, it had previously only been theorized or seen in simulations regarding the Sun.

The discovery, published in the journal Nature, is significant for understanding solar dynamics. Scientists believe these plasma swirls play a crucial role in twisting magnetic field lines, which may contribute to solar flares, coronal mass ejections, and the heating of the Sun’s outer atmosphere, known as the corona. Understanding these processes is vital for predicting space weather that can impact Earth’s GPS systems, satellites, and power grids.