NOAA 3599's spectacular eruption

Active region NOAA 3599 had already rotated over the Sun's west limb when it produced a spectacular long duration C-class flare.

Slowly but surely

The polar field reversal on the Sun is ongoing, but it is not completed yet as testified by observations.

Colourful curtains

A moderate geomagnetic storm was observed on 3 March. Polar lights were photographed as far south as mid-England and Lower Saxony in Germany.

Wuthering Heights

So far this solar cycle, NOAA 13590 is the largest sunspot group and it has produced the strongest solar flare. Some perspective.

More X-class flares

NOAA 3590 produced 3 X-class flares in 24 hours: an X1.8 flare peaking late on 21 February, an X1.7 flare peaking early on 22 February, and an X6.3 event that peaked on 22 February at 22:34UTC. The latter is the strongest flare so far this solar cycle. UPDATED.

A stunning eruption

A stunning double eruption took place near the northeast solar limb on 12 February.

An X-class flare for breakfast

NOAA 3576 unleashed a powerful X2.5 flare on 16 February at 06:53 UTC.

Solar flares in images

A view on some of the most prolific flaring events that took place during the week of 5-11 February.

Strong X3 flare

A strong X3.3 flare peaked at 13:14 UTC on 9 February. The source region is thought to be NOAA 13575, located well beyond the southwest solar limb.

First SC25 maximum

The provisional smoothed sunspot number peaked at 125.2 in June 2023 (SILSO), marking what is most likely the first maximum of solar cycle 25. A second, higher maximum is expected later in 2024.



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