JAKARTA – NASA has revealed recent increased solar activity. On December 1, 2025, at approximately 9:49 a.m. Western Indonesian Time (WIB), the sun reportedly released a significant amount of radiation and energy.
The flare was classified as an X1.9 flare. Based on the classification, the X class represents the most intense burst of energy. Meanwhile, the number after the X indicates the strength of the flare.
Although considered strong, this flare is still lower than previous findings. On November 11, NASA announced a solar flare eruption that reached an X5.1 classification. This was the strongest eruption to occur throughout 2025.
This flare is known to have originated from an active sunspot called AR4274. The AR4274 region has also shown increased activity for some time. This region previously produced an X1.7 solar flare on November 9 and an X1.2 on November 10.
The extremely powerful X5.1 eruption is known to have had a major impact, even detrimental to communities in Africa and Europe. Reports indicate that this explosion triggered a strong radio blackout, reaching the R3 level.
Specifically, this flare disrupted high-frequency radio communications on the side of the Earth that was illuminated by the sun at the time of the eruption. This was caused by the X-ray and extreme ultraviolet radiation emitted towards Earth.
This eruption was also accompanied by a Coronal Mass Ejection (CME) that was moving rapidly towards Earth. Currently, there are no reports of impacts from this latest solar flare. However, its activity will continue to be monitored.
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