By Victoria Bryhan | 2025-09-30
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Complex sun
On 09/30/2025 10:43 am by Patricio Leon | Santiago, Chile
Sunspots AR 4236 and pair AR4230/39 have continue growing in size of dark cores and complexity in the last day, both are now about 7 by 3 Earths, plus, both have delta magnetic components which can produce X-class flares; meanwhile, high Kp index (6) and solar wind speed (650 km/s) maintain the aurora display
Newt 4.5" + solar film, 1/500s ISO100
crop, B/C
