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Sun activity: Goodbye AR3014, biggest sunspot so far
Sun activity produced a M1.3 class flare from a plage. Today we say so-long farewell to the biggest sunspot of Solar Cycle 25 so far.
May 26, 2022
The sun as you’ve never seen it
ESA's Solar Orbiter reached perihelion, its closest point to the sun, in March. Here are stunning closeup images as never seen before.
May 22, 2022
Sun activity: Week of May 16, 2022
Looking for the current page on sun activity? Click here. May 22 update: Giant spot shrinking The drama of sun...
May 16, 2022
Sun activity: Week of May 9, 2022
Sun activity for the week of May 9 to 15, 2022. The week ended with a glorious prominence eruption ...
May 9, 2022
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
