Friday, May 2, 2025

Naked-eye sunspot continues traversing solar disk

As predicted by GONG far-side imaging, the active region has crossed the solar limb on April 28! The leading sunspot is large—visible to the naked eye with proper solar filters. So far, the region produced two M-class flares, and a number of C-class flares.

Evolution of  this region over last few days can be seeing at https://testbed.swpc.noaa.gov/products/gong-imagery

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X-ray flare in a growing active region

Active region 14366 crossed East solar limb at about 18:00 UT on 29 January, 2026. The region was growing rapidly, and it was a location of ...