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Topical Issue on Travelling Ionospheric Disturbances (TIDs)

JSWSC has opened a Topical Issue on Travelling Ionospheric Disturbances (TIDs), i.e. plasma density fluctuations that propagate as waves through the ionosphere at a wide range of velocities and frequencies.

First Open Doors ever at our Radio Astronomy Station

Don’t forget to come visit our radio antenna's in the coming weekend! It is a unique opportunity to have fun with the whole family in a beautiful environment.

Solar Orbiter Discovers Tiny Jets That Could Power the Solar Wind (NL-FR-EN)

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ESA’s Solar Orbiter spacecraft has discovered a multitude of tiny jets of material escaping from the Sun’s outer atmosphere. Each jet lasts for between 20 and 100 seconds, and expels plasma at around 100 km/s. These jets could be the long-sought-after source of the ‘solar wind’.

STCE's Summer Games

A few fun puzzles --all related to space weather-- have been created to survive a rainy day during these summer holidays.

NOAA 3386 has done it!... AGAIN!

After several M-class flares during the last few days, active region NOAA 3386 finally produced an X1 flare late on 5 August. And another X1 flare on 7 August. UPDATED.

No holidays for the Sun!...

The Sun remained busy this week producing several M-class flares. A particular impressive eruption took place on 28 July and was associated with the second moderate solar radiation storm of the ongoing Solar Cycle 25.

Heat waves on the Sun (EN-FR-NL)

A joint scientific team led by the Royal Observatory of Belgium (ROB) and the KU Leuven has found that high-frequency magnetic waves could play an essential role in keeping the Sun’s atmosphere at millions of degrees. This finding sheds a new light on the most intriguing solar mystery: what makes the Sun’s atmosphere hotter than its surface?

The towering inferno

A relatively small filament became unstable on 19 July and resulted in an impressive eruption and associated coronal mass ejection.

How do you communicate on extreme events?

The SIDC Forecasters at the Royal Observatory of Belgium played a key role in an ESA exercise to define how to communicate clearly on the impacts of extreme space weather events.

STEREO-A's inferior conjunction

After almost 17 years, STEREO-A is nearly back from where it all started.

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