By Sudhir Sharma | 2026-06-25
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giant
On 06/25/2026 11:05 am by Patricio Leon | Santiago, Chile
huge AR4478 sunspot is now entirely visible, although severely foreshortened still. The big western dark core is about three Erths size tall so the full group can be about nine Earths wide. Its magnetic delta component promises action in coming days, must wait to see.
Newt 4.5" + solar film, 1/640s ISO100
crop, b/c