Solar activity

Sunspot regions, coronal holes, filaments? In this forum we discuss everything related to the activity on our nearest star.

127 topics in this forum

    • 3 replies
    • 270 views
    • 2 replies
    • 610 views
    • 3 replies
    • 836 views
    • 2 replies
    • 604 views
    • 1 reply
    • 443 views
    • 4 replies
    • 663 views
    • 3 replies
    • 421 views
    • 5 replies
    • 1,128 views
    • 21 replies
    • 1,886 views
    • 2 replies
    • 699 views
    • 1 reply
    • 1,198 views
    • 1 reply
    • 493 views
    • 11 replies
    • 1,171 views
    • 1 reply
    • 621 views
    • 16 replies
    • 1,197 views
    • 3 replies
    • 469 views
    • 15 replies
    • 1,270 views
    • 41 replies
    • 2,264 views
    • 2 replies
    • 543 views
    • 8 replies
    • 1,117 views
    • 3 replies
    • 396 views
    • 30 replies
    • 2,260 views
    • 5 replies
    • 800 views
    • 3 replies
    • 905 views
    • 1 reply
    • 668 views