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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.

870 topics in this forum

  1. a more curious question

    By Isatsuki San,
    • 1 reply
    • 553 views

  2. Sunspots and the Grand Solar Minimum of 2020

    By Justeen Mayer,
    • 11 replies
    • 1.8k views

  3. What's happened to sunspot 2795?

    By Isatsuki San,
    • 4 replies
    • 866 views

  4. christmas X class flare?

    By solar investigator,
    • 1 reply
    • 713 views

  5. New Sunspot rotating into earth view tomorrow!

    By MinYoongi,
    • 1 reply
    • 841 views

  6. Is the sun abnormally bright at the moment? 1 2

    By theta,   
    • 48 replies
    • 34.8k views

  7. Do I need to be concerned about the latest C class solar flare that is heading towards earth?

    By Tom W,
    • 18 replies
    • 2.5k views

  8. Prediction for Solar Cycle 25 by Dr Keith Strong

    By Marcel de Bont,
    • 0 replies
    • 1.8k views

  9. I'm scared with big sun spot 2876

    By Isatsuki San,
    • 6 replies
    • 1.7k views

  10. Earth-Facing Solar Flares

    By Laila Bseiso,
    • 1 reply
    • 957 views

  11. Should we be worried about this?

    By daniel anderson,
    • 19 replies
    • 1.9k views

  12. M1.19 flare on 29-May-2020?

    By Drax Spacex,
    • 3 replies
    • 930 views

  13. New active Region!

    By MinYoongi,
    • 1 reply
    • 1k views

  14. Solar Flare Probability Discrepancy

    By Drax Spacex,
    • 3 replies
    • 1.2k views

  15. Question regarding the two active regions in the northern hemisphere

    By goldminor,
    • 2 replies
    • 675 views

  16. How normal/abnormal is the current behavior of sunspots?

    By goldminor,
    • 6 replies
    • 2.3k views

  17. CME 2020-Oct-06

    By Drax Spacex,   
    • 0 replies
    • 762 views

  18. NASA's failed prediction for the start of Solar Cycle 25

    By Patrick P.A. Geryl,
    • 3 replies
    • 2k views

  19. Hemisphere assignments.

    By cutterboyus,
    • 3 replies
    • 838 views

  20. Sunspot with no spot, is a sunspot?

    By Greg,
    • 9 replies
    • 913 views

  21. Solar wind and plasmas

    By Mckinnon,
    • 2 replies
    • 411 views

  22. Relating the Start to the Terminator of Solar Cycle 25 and a Significant X-Flare Event

    By Patrick P.A. Geryl,
    • 9 replies
    • 1.5k views

  23. Visual Representation of Earth Directed Solar activity

    By shirleydarkillustrat,
    • 4 replies
    • 982 views

  24. Solar-activity in maximum

    By Mckinnon,
    • 23 replies
    • 2.4k views

  25. Now "official" Solar-Cycle 25 started in December 2019

    By Ron NL,
    • 5 replies
    • 829 views
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