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Why are east and west on the sun reversed?
East and west on the sun are opposite from what you might expect. On the sun, east is to the left and west is to the right. Learn why here.
May 3, 2022
A Grand Solar Minimum? Or a normal sun?
A Grand Solar Minimum happens when the peaks of several solar cycles in a row show less than average intensity. Are we in one?
May 2, 2022
Sun activity: Week of May 2, 2022
Sun activity for the week of May 2 to 8, 2022. The week ended quietly, but with beautiful prominences from solar region AR3007.
May 2, 2022
What does the sun’s X-ray flux tell us?
Solar physicists often speak of the sun's X-ray flux as being high, or low. Solar flares are like waves on the background ocean of the sun's X-ray flux.
May 1, 2022
Sun activity: Week of April 26, 2022
Sun activity for the week of April 25 to May 1, 2022. We had an X-flare this week, and a moderate geomagnetic storm.
April 25, 2022
Sun activity: Giant X-flare, then quiet
Sun activity for the week of April 18 to 24, 2022. We had a record-breaking X-flare this week. Then things got quiet.
April 24, 2022
Sun activity: Bam! X Flare!
Sun activity for the week of April 11 to 17, 2022. X-flare over the weekend. Exciting week ahead.
April 17, 2022
Sun activity: A strong storm ended this quiet week
Sun activity for the week of April 4 to 10, 2022. This week has been relatively quiet. But we had an unexpected (albeit brief) strong geomagnetic storm during the night of April 9-10.
April 10, 2022
Sun activity: An exciting week!
Sun activity for the week of March 28 to April 3, 2022: Sun activity was high. Multiple CMEs came Earth's way. Auroral displays. An X-flare!
April 3, 2022
Sun activity: CMEs and a solar tsunami
Sun activity for the week of March 21 to 27, 2022. An M-class flare on March 26, 2022, sent out a "solar tsunami" aka as an EIT wave. Read more and see images here.
March 27, 2022
