Astronomers have recently unveiled fascinating new processes occurring in the atmosphere of our sun, thanks to stunningly detailed images of the star.
Dirk Schmidt and his team at the US National Solar Observatory utilized the Goode Solar Telescope in California to capture these images. By employing adaptive optics to eliminate the distortion caused by Earth’s atmosphere during solar observations, they were able to study features in the sun’s corona, its outermost layer.
According to Schmidt, “The level of detail we are able to observe is unprecedented, likely revealing aspects of the sun that have never been seen before.”
Plasma streams in the sun’s corona
Schmidt et al./NJIT/NSO/AURA/NSF
These detailed images showcase plasma streams moving through the corona, as well as solar prominences—loop-like structures of plasma—disintegrating and reforming. Additionally, the observations offer a closer look at coronal rain, large droplets of plasma that descend to the sun’s surface as they cool and condense due to gravity.
The data was collected during the summers of 2023 and 2024, with the hope that these images will shed light on the mystery of why the sun’s corona is significantly hotter than its surface, with temperatures in the millions of degrees compared to thousands on the surface.
One hypothesis suggests that the sun’s corona may be heated by the interaction of magnetic fields, leading to the creation of nanoflares. Schmidt notes, “The images reveal tangled and twisting structures that could be responsible for heating the corona.”
While many features in the images can be explained, some remain enigmatic, such as a wispy plasma formation that transformed into multiple blobs. Schmidt remarks, “We are currently unable to offer a definitive explanation for this phenomenon. It’s possible that this discovery is something entirely new, and it will be intriguing to see how the scientific community interprets it.”
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