Delivery of SWx experts

Space Weather is 'in' and more and more organisations want to learn about it. They are right to do so.

Solar storms drop their energy in the Earth's magnetosphere and atmosphere and as such lie at the basis of space weather. Technology that relies on satellite navigation and radio wave propagation can be impacted by space weather, as well as large energy transport systems like electrical grids. Harmful radiation at flight altitude can increase when a solar storm hits Earth.  

A filament leaving the Sun

Late on 2 February, a filament near the northwestern solar limb became unstable and erupted. The associated CME was not directed to Earth.

Enhanced electron flux

Last week, in response to the high speed solar wind stream associated with a coronal hole, the level of energetic electrons in the Earth's magnetosphere increased significantly. Fortunately, this time, these "killer electrons" did not permanently phase out a satellite.


On 22 January, a bright fireball illuminated the morning skies of the Netherlands, Belgium, the United Kingdom and the north of France. BRAMS stations did not capture the radio signal of this fireball due to a particular set of circumstances.

NOAA 2786: Take 3!

As seen from Earth, old sunspot group NOAA 2786 has started its third transit of the solar disk.

PROBA2's view of the Sun

A poster with imagery by the PROBA2/SWAP instrument showing the evolution of the Sun's corona in 2020 has been released.


Based on the sunspot activity of the last few months, Solar Cycle 25 seems to be on a slightly faster track than the previous solar cycle.

Ready or not... Here I come!

Small active region NOAA 2790 produced a long duration C7 flare and was associated with an earth-directed full halo coronal mass ejection. UPDATE: As predicted, the CME arrived at Earth early on 10 December but it did not produce significant geomagnetic activity.

Homologous C-class flares

On 5 and 6 December, a triplet of nearly identical C-class flares took place in active region NOAA 2790.

SOHO celebrates its 25th anniversary

SOHO, the Solar and Heliospheric Observatory, is celebrating a quarter of a century of impressive solar observations and scientific discoveries.



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