Stunning images reveal never-before seen cell-like structures on the sun


30 Jan 2020872 Views

Image: © lukszczepanski/Stock.adobe.com

Scientists have captured surface images of the sun unlike any seen before, helping us better predict damaging solar storms.

The clearest and most detailed images of the sun captured by the world’s largest telescope will open the door to “new horizons in solar physics”, scientists have said. The Daniel K Inouye Solar Telescope, located in Hawaii, has produced the highest-resolution images of the sun’s surface ever taken, showing the star’s turbulent atmosphere in intricate detail with features as small as 29km visible for the first time.

The pictures also reveal gold cell-like structures, roughly the size of the US state of Texas, which are the signature of violent motions that carry heat from inside the sun to its surface. Astronomers believe the telescope, which belongs to the National Science Foundation (NSF) in the US, will usher in a new era of solar science and help unlock the mysteries of the sun and its impacts on Earth.

Mihalis Mathioudakis, a professor from Queen’s University Belfast who helped develop the cameras for the telescope, said: “The imaging produced by the Inouye Solar Telescope opens new horizons in solar physics.

“Its imaging capability allows us to study the physical processes at work in the sun’s atmosphere at unprecedented levels of detail.”

Close-up of the sun with cell-like structures coloured yellow and black.

The sun’s features as small as 29km in size can be seen for the first time ever. Image: NSO/AURA/NSF

Better predicting solar storms

The telescope is also expected to play a key role in the better understanding of space weather.

NSF director France Cordova said: “NSF’s Inouye Solar Telescope will be able to map the magnetic fields within the sun’s corona, where solar eruptions occur that can impact life on Earth.

“This telescope will improve our understanding of what drives space weather and ultimately help forecasters better predict solar storms.”

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Understanding more about solar storms will enable governments and utility companies to better prepare for future space weather events, allowing for more time to secure power grids and critical infrastructure and protect active satellites.

Infographic showing the scale of the cell-like structures on the sun's surface.

Size comparison for the close-up image of the sun. Click on the image for a larger version. Image: NSO/AURA/NSF

Matt Mountain, president of the Association of Universities for Research in Astronomy, which manages the telescope, said: “On Earth, we can predict if it is going to rain pretty much anywhere in the world very accurately, and space weather just isn’t there yet.

“Our predictions lag behind terrestrial weather by 50 years, if not more. What we need is to grasp the underlying physics behind space weather, and this starts at the sun, which is what the Inouye Solar Telescope will study over the next decades.”

The Inouye Solar Telescope will work with NASA’s Parker Solar Probe and soon-to-be-launched European Space Agency’s Solar Orbiter to explore the frontiers of solar research.

David Boboltz, programme director in NSF’s division of astronomical sciences, said: “These first images are just the beginning.”

– PA Media