[REVISION HISTORY]

Inouye Solar Telescope solar turbulence discovery

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What changed

2026-08-26 03:21 UTC → 2026-09-12 08:43 UTC · added ~~removed~~

In August 2026, researchers reported that the Daniel K. Inouye Solar Telescope on Maui had captured the highest‑resolution images ever of the Sun’s photosphere. Data taken in April 2025 revealed direct Kelvin‑Helmholtz instabilities—vortex structures 20–65 km across—on a magnetically active region near a sunspot. The findings, published in *Nature*, highlighted a mechanism that could drive magnetic‑energy buildup and influence space‑weather events such as solar flares and coronal‑mass ejections. A few days later, a follow‑up report emphasized the chaotic, “boiling” plasma landscape seen in the same observations, confirming the presence of giant vortices and magnetic friction. The authors stressed that the Sun’s surface is far more turbulent than previously modeled and that understanding these small‑scale instabilities should improve forecasts of solar eruptions and geomagnetic storms that affect satellites, power grids and communications on Earth. On 7 August 2026, a press release detailed the international collaboration involving the U.S. National Solar Observatory, NCAR’s High Altitude Observatory and Germany’s Max Planck Institute for Solar System Research. On 10 August 2026, astronomers led by David Kuridze and Friedrich Wöger noted they analyzed 47 vortices with diameters ranging from 25 to 170 kilometers. Technical details clarified on 13 August 2026 explained that researchers used high-speed cameras recording 740 frames per second, combining 2,000 exposures. By late August, scientists noted these spiral-shaped features, which occur when plasma layers move at different speeds, may provide clues to why the Sun’s corona is significantly hotter than its visible surface. These whirlpool-like structures are caused by magnetic fields being twisted and moved by hot gas motion. ~~Researchers emphasized~~ By mid-September, researchers confirmed that ~~understanding this small-scale physics is crucial~~ the observed motions match theoretical predictions of Kelvin-Helmholtz instabilities (KHIs) after comparing images with computer simulations. These tiny structures, some measuring less than 20 kilometers across, provide direct observational evidence for ~~predicting space weather that could disrupt Earth's power grids and satellites.~~ the long-theorized fluid instability.

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