By Lorraine Boyd | 2025-12-21
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increasing
On 12/21/2025 06:27 pm by Patricio Leon | Santiago, Chile
in solstice day new active regions AR4316 and 4317 are growing in size and activity; a big coronal hole maintains Kp index and solar wind speed in high levels
Newt 4.5" + solar film, 1/640s ISO100
crop, B/C
