Here is the evolution of epic sunspot cluster 4366. Now we observe 2 main regions, the large single core leader region and the complex and newly enlarged trailing region.

Source: NASA/SDO



by Busy_Yesterday9455

5 Comments

  1. GregBuckingham on

    I saw this sunspot with some eclipse glasses the other day without a telescope. How big is it? And does it mean anything to us? 😮

  2. Southern-Break5505 on

    Is there any scientific explanation for this region, and why it cause all these flareÂ