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Something's lurking behind the solar limb...

An active region that produced several C-class flares and even an M-class flare while it was still behind the solar limb, turned out to be a very small sunspot group and did not produce any significant flaring once it became visible on the solar disk.

SSEA deadline for early-bird registration is coming up

Tickets for the 4th Symposium on Space Educational Activities are available at a discounted early-bird price until January 31st! Hurry up and do not miss the opportunity to discuss with outreach experts from all over the world.

The two faces of the Sun

Over the last few months, the Sun has showing us one hemisphere with quite some sunspots, and another with barely any sunspots at all. To plot this changing solar activity, a synoptic map is used.

Asteroid (315579) named Vandersyppe in memory of Anne

STCE colleague Peter De Cat discovered asteroid (315579) and named it after Anne Vandersyppe, our invaluable colleague who worked as group secretary for the Solar Physics Department and sadly passed away in 2019.

12 years of successful LYRA observations

12 years ago today, on 6 January 2010, the doors of the LYRA instrument were opened for the first time. The observation of LYRA's first Lyman-alpha flare paved the way for much interesting science.

M-class flares

Coinciding with the enhanced sunspot activity of the last few weeks, the Sun also produced 8 low-level M-class flares.

Obituary: Sergio Cortesi

On 18 December 2021, Sergio Cortesi passed away at the age of 89. He was one of the giants amidst solar observers, and essential in the continuity and stability of the International Sunspot Number.

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.

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