Eye pleaser

A spectacular eruption took place on the Sun's farside on 11 April. The associated coronal mass ejection was not earth-directed.

Peek a boo

April 8 2024, the Sun and the Moon did their peek a boo trick. People in North America could see the Moon sliding in front of the Sun catching a glimpse of the solar corona with their own eyes. We were there.

Preparing for the eclipse

Position of Solar Orbiter on 8 April 2024, with Solar Orbiter’s turns around the Sun shown in green
Proba-3 set up in space

On 8 April 2024, a large part of the United States and Mexico will experience a total solar eclipse. Also at the STCE in Belgium, all eyes will be on the Sun. Three satellite instrument teams are preparing for unique, yet complementary, eclipse observations.

NOAA 13615

Active region NOAA 13615 was one of the larger sunspot groups so far this solar cycle. During its transit, it produced 1 X-class flare and 43 M-class flares, the latter is an exceptionally high number.

NOAA 3615 finally did it!

NOAA 3615 produced its first X-class flare late on 28 March. ***UPDATE: The associated CME has no earth-directed component.***


A long-duration X1 flare was associated with the strongest proton event so far this solar cycle, as well as with an earth-directed full halo CME. UPDATE: The ICME arrived shortly after noon on 24 March, sparking a severe geomagnetic storm.

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.



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