The combined high-speed solar wind stream from 2 coronal holes affected the earth environment from 30 September onwards.

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millionth EUI picture is a fact

September 2025. The space instrument EUI onboard the spacecraft Solar Orbiter, took its millionth solar picture. Congratulations!

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On the confusing appearance of sunspot region NOAA 4216 (SIDC 621).

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The wind stream associated with a big coronal hole may trigger an increase in the number of highly energetic electrons in the satellite environment, thus posing a threat to satellite operations.

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A few words and context on (very) long duration geomagnetic storms.

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Fundamental Research

The STCE does Fundamental Research.

Public Outreach

Open DoorsThe STCE does public outreach during the STCE Annual Meeting and the Open Doors of the Space Pole in Uccle.

One of the highlights of the Open Doors is always a visit to the Solar Dome. A small introductory presentation is first given in the corridor of the SIDC. Skilled observers and space weather forecasters explain in laymen terminology what sunspots are, how they are observed, why these observations are so important, and how solar eruptions affect us and our technology. Then, the small groups of 10-15 people are guided stairs towards the top of the solar dome. There, the various solar telescopes are shown and their specific applications are discussed. Weather permitting, the visitors can also make solar observations using a projected solar image from the white light solar telescope. During and after the visit, there is plenty of opportunity to ask questions to the guides.

 

Travel Info

 

Administration

 

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