Stirling Astronomical Society Gallery

Sunspot Groups

29 Apr 2026

Sunspot groups

Sunspot groups 4424 and 4425

© Alan Cayless all rights reserved.

The Sun is active this week, with two large groups of sunspots and several smaller groups. Group 4425 is on the left in this closeup and 4424 on the right. The larger spots within each group show light bridges across the umbra and structure in the penumbra.

More images: Closeup Full Sun

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