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Progress of SC25

The STCE's SC25 Tracking page has been updated to reflect the latest evolution of some critical space weather parameters for the ongoing solar cycle 25 (SC25).

Coronal holes do it again!

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

The EUI team has become millionaires!

millionth EUI picture is a fact

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

Deceptive

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

A supersized coronal hole

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.

Long-duration geomagnetic storms

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

The Sun's catwalk

Never a dull moment with the Sun: impressive prominence eruptions and powerful solar flares took turns to give an impressive show of solar activity.

What is a CoSEE-Cat?

CoSEE-Cat is not an animal lounging on your couch but what is it then?

A Blizzard of Solar Campfires

STCE researchers used a sophisticated wavelet-based algorithm to automatically detect and characterize thousands of transient EUV brightenings, often called campfires, in the HRIEUV data obtained at the closest-perihelion of Solar Orbiter.

ESWW Early-bird registration deadline coming up

The early-bird registration is closing soon: deadline September 5.
If you have not yet submitted an abstract, you can still apply for a poster: deadline September 5.

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