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.

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.

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...

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 ...

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.

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?

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.

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.

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.

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.