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Solar activity

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


Solar activity forum rules - Let's keep things tidy!

1. Want to talk about a sunspot region? Feel free to make a topic! Keep the title clean and simple! For example: Sunspot region 1234, or AR1234.
2. Want to discuss a solar flare? Do not make a new topic! Post in the existing topic for that sunspot region or make a new topic if the sunspot region in question does not have a topic yet!
3. Solar flares and sunspot regions on the east limb that are not numbered yet are discussed in this topic.
4. Returning active region? Make a new topic with the current sunspot region number. Do not revive the old topic for that sunspot region!
5. Want to talk about coronal holes? There is a dedicated topic for that. Do not post a new topic.
6. Want to talk about filaments? There is a dedicated topic for that. Do not post a new topic.
7. Discussions about possible earth-directed coronal mass ejections and the geomagnetic storm that it might cause go in the geomagnetic activity forum.


842 topics in this forum

    • 4 replies
    • 354 views
    • 7 replies
    • 455 views
  1. AR 3614

    • 12 replies
    • 1.3k views
    • 2 replies
    • 153 views
    • 148 replies
    • 19.4k views
  2. Region 3612

    • 1 reply
    • 338 views
    • 37 replies
    • 3.9k views
    • 4 replies
    • 746 views
  3. Region 3590 1 2 3 4 27

    • 669 replies
    • 85.3k views
    • 77 replies
    • 11.4k views
  4. Powerful CME

    • 10 replies
    • 1.8k views
  5. Growth of Cycle 25 1 2 3 4 14

    • 344 replies
    • 51.3k views
  6. AR 3590

    • 5 replies
    • 642 views
    • 5 replies
    • 599 views
    • 5 replies
    • 968 views
    • 2 replies
    • 9k views
    • 5 replies
    • 629 views
    • 15 replies
    • 2.8k views
  7. Reverse flares?

    • 13 replies
    • 840 views
    • 612 replies
    • 51.8k views
  8. AR 13597

    • 2 replies
    • 365 views
  9. AR 3595

    • 4 replies
    • 1k views
    • 6 replies
    • 836 views
  10. Latest SC25 Predictions 1 2 3

    • 66 replies
    • 8.7k views
    • 16 replies
    • 1.8k views
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