In the process they also discovered Kelvin-Helmholtz instability on the sun’s surface. Highest-resolution images of the sun’s surfaceOn August 5, 2026, the U.S. National Science Foundation National Solar Observatory (NSF NSO) announced what they said is a groundbreaking discovery in the field of solar physics. And the research is based on data collected with the world’s largest solar telescope, the NSF Daniel K. Inouye Solar Telescope. Bottom line: The Inouye Solar Telescope has captured the highest-resolution images of the sun’s surface yet. These images show Kelvin–Helmholtz instabilities, which may help explain why the sun’s surface gets so hot and explosive.