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A New View of the Sun’s Corona

Proba-3_Streamers_around_the_Sun
Proba-3_tracks_solar_wind_moving_close_to_the_Sun

The Belgian-led ASPIICS coronagraph aboard ESA’s Proba-3 mission reveals a dynamic birthplace of the solar wind. Observations made by the ASPIICS coronagraph reveal a world of small-scale activity in the Sun’s inner corona, according to a new study led by the Royal Observatory of Belgium.

The International Sunspot Number revisited

An interesting paper has been published end 2025: 'An independent assessment of the International Sunspot Number since 1996'.

A wimp and a bully

Two earth-directed coronal mass ejections surprised space weather forecasters with their arrival time and geomagnetic impact. The first one passed almost unnoticeable, the second one eventually resulted in a strong geomagnetic storm.

The STCE in 2024

The STCE Annual Report 2024 is now available at https://www.stce.be/annualReport

Sneak Peak

Ever wondered what exactly we do at the STCE?

Yana, Hervé, Marie, Mark and Tobias are here to tell you.

X-class flare!

NOAA 4405 produced an X-class flare early on 30 March. The associated CME arrived around noon on 1 April. There's no chance on aurora over Belgium tonight. ***(UPDATED 2)*** 

20 year STCE

In March 2006, 20 years ago, the Minister of Science Policy announced the foundation of the Solar-Terrestrial Centre of Excellence (STCE), a knowledge centre for space weather. Twenty years later, the STCE is an international reference for space weather. 

Proba-3’s Coronagraph is alive!

The spacecraft has phoned home, re-establishing the lost connection. 

We're not done yet!

Though the solar cycle maximum is already 1.5 years behind us, we may still expect a number of very strong solar flares over the next 2 years.

Message in a rock

On March 8, several stations from the BRAMS network observed the meteor that became instantaneously famous. From 18:55 CET, people started to post on social media pictures and movies of a bright, exploding meteor. 

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