Inouye Solar Telescope captures highest-resolution Sun images, reveals Kelvin-Helmholtz instabilities
International team discovers tiny plasma vortices on the Sun's surface that may explain the mystery of extreme coronal heat.
Conversation activity · last 3 days peak 4/hr
Summary, timeline and people extracted by Claude from 10 items across 3 sources · 7h ago. Quotes are verbatim.
An international team of astronomers using the Daniel K. Inouye Solar Telescope in Hawaii released the highest-resolution images ever captured of the Sun's visible surface, revealing tiny plasma whirlpool-like structures smaller than 20 km across. The features are identified as Kelvin-Helmholtz instabilities—a fluid dynamics phenomenon never before confirmed on the Sun—which may explain why the Sun's outer atmosphere reaches millions of degrees while its surface is only 6,000°C.
- The Inouye Solar Telescope captured images revealing structures smaller than 20 km on the Sun's surface—comparable to discerning a €1 coin from 180 km away.
- The images provide the first experimental confirmation of Kelvin-Helmholtz instabilities on the Sun, a phenomenon theoretically predicted over a century ago.
- The discovery may explain why the Sun's corona reaches millions of degrees while its surface remains at only 6,000°C, potentially solving a half-century-old solar physics mystery.
- The findings have practical applications for understanding and potentially predicting solar bursts that disrupt satellites, power grids, and communications on Earth.
How it unfolded
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Report Multiple outlets cover implications and physics
EarthSky, The Guardian, and other outlets cover the discovery in detail, emphasizing implications for understanding solar activity, potential applications for predicting solar bursts, and the theoretical breakthrough in confirming century-old predictions.
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Report Wired covers hidden phenomenon discovery
Wired reports that the photograph, taken in visible light, enabled observation for the first time of tiny plasma vortices predicted for over a century.
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Report Physics World reports highest-resolution solar image
Coverage describes the image taken by the Daniel K. Inouye Solar Telescope revealing tiny plasma whirlpool-like patterns and band-like structures associated with Kelvin-Helmholtz instabilities at granule edges.
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Event NSF NSO announces discovery and publishes findings
The National Solar Observatory announces a groundbreaking discovery in solar physics. International researchers publish findings in Nature journal describing Kelvin-Helmholtz instability observed on the Sun's photosphere using data from the Inouye Solar Telescope.
What people are saying verbatim
“The newly discovered plasma vortices impressively demonstrate how minute processes – at the limit of what we can resolve using all available techniques – significantly determine the nature of our star”
Sami Solanki, Director, Max Planck Institute for Solar System Research · Physics World · Aug 5
“These are the highest spatial resolution images of the solar surface ever acquired”
Friedrich Wöger, Senior scientist, US National Solar Observatory · The Guardian · Aug 8
“My first reaction was: 'Wow, how can we see such tiny, fine-scale structures on the sun? This is something we have never seen before in any solar observations.'”
David Kuridze, Astronomer, research team · The Guardian · Aug 8
“This could solve this biggest mystery of the last half a century for solar physics and astrophysics. When you have this instability in the system, it is very easy to cascade the energy into smaller scales. And at some point, it just dissipates as a heat.”
David Kuridze, Astronomer, research team · The Guardian · Aug 8
“We believe that the discovery of Kelvin-Helmholtz instability in the solar photosphere, backed up by analysis of numerical simulations, is a major step forward in our understanding of the dynamics and evolution of solar and stellar plasma”
David Boboltz, Deputy Director, National Solar Observatory · EarthSky · Aug 8