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New milestones for SC25

Solar activity continued to be elevated, with both the sunspot number and the solar radio flux reaching their highest values so far this solar cycle.

Triple X

The Sun produced a 3rd X-class flare in just 5 days. This page features the ongoing series of X-class flares and other solar activity. UPDATED 1.

X-class flares are back!

A side-by-side comparison of and more details on the X-class flares from 6 and 9 January.

X1.9 flare from NOAA 3184

Compact and complex sunspot group NOAA 3184 produced a X1.9 flare on 9 January.

X-class flare from NOAA 3182

NOAA 3182 produced an X-class flare early on 6 January. Space weather effects are limited.

Monthly sunspot number exceeds 100!

Exactly 3 years after the start of the new solar cycle, the monthly sunspot number has exceeded 100 for the first time.

The coronal hole that wasn't

What looked like a weak coronal hole structure in EUV imagery turned out to be a filament channel.

The PROBA2 Science Center launches its 10th Guest Investigator call

The PROBA2 PI-team welcomes research proposals for the tenth round of its Guest Investigator program for research based on SWAP and LYRA data analysis by scientists outside the SWAP and LYRA PI-teams.

The story behind 3 solar flares

Last week's solar flare activity was characterized by a number of interesting events.

GNSS (a bit) in trouble

A transient in the solar wind impacted the earth environment on 7 November. Though it resulted only in a brief minor geomagnetic storm, its effects were clearly felt in some GNSS technologies, especially over Canada and Scandinavia.

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