High sunspot numbers

Sunspot numbers were at high levels in December, with the daily estimated international sunspot number (EISN) by SILSO reaching 149 and 145 on 22-23 December respectively. These are the highest sunspot numbers recorded since September 2015.

Kiss and fly: New discoveries with PSP

The Parker Solar Probe reached new milestones in 2021, being the first spacecraft to fly through the Sun's corona, and tracing the magnetic switchbacks to their source. Over the next years, PSP will make even closer flybys of our star.

Battle of the Scientists: the STCE enters the arena

The Battle of the Scientists is a unique and interactive competition in which 5 scientists present their research to a room filled with hundreds of primary school children, while thousands more are watching from their classroom through a livestream.

Science results from SolO's cruise phase

Astronomy & Astrophysics has just published a Special Issue with 50+ papers highlighting the most important discoveries and observations made by Solar Orbiter during its cruise phase.

Celebrating SWAP's first glimpse of the Sun

Twelve years ago today, on 14 december 2009, the SWAP EUV telescope onboard the PROBA2 satellite laid its eye on the sun for the first time. After the nerve-racking procedure of opening the instrument door and taking this first image, PROBA2 operators and scientists waited impatiently for this first image to be downloaded from the satellite.

Antarctic Eclipse Observations

While the penguins were gazing at the total eclipse on December 4, the instruments onboard the PROBA2 satellite worked overtime to image and measure not one, but four passages of the moon in front of the sun. One of these occultations was nearly total for the SWAP EUV imager: as much as 96% of the solar disk was covered by the moon during the second passage

EUHFORIA predicts the Antarctic Solar Eclipse

Scientists run the EUHFORIA computer programme to have a preview of the solar eclipse of December 4. A chance to check their calculations. Fingers crossed and certainly ask the penguins.

Antarctic Solar Eclipse

Let’s hope the penguins have their eclipse glasses ready. They will form most of the crowd in the Antarctic that will be able to witness a total solar eclipse on December 4. As always, the LYRA and SWAP instruments on PROBA2 are ready to observe this spectacle from their sun-synchronous orbit around Earth.

An exit in style

NOAA 2891 produced a photogenic solar eruption late on 9 November, while it was already well behind the northwest solar limb.The event was accompanied by an interesting feature, the so-called Supra Arcade Downflows (SADs).

The Day After...

The arrival and subsequent passage of a potent ICME late on 3 November left its mark on the evolution of energetic particles in the magnetosphere. Also the number of cosmic rays dipped sharply, but briefly.



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