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NOAA 4455 produced 2 strong M-class flares and one X1 flare in less than 12 hours. The related coronal mass ejections are expected to hit the near-earth environment from late on 4 June through 5 June. There's a small chance for auroras over Belgium. ***UPDATED (1)***

The great geomagnetic storm of 4 February 1872 is renowned for its splendid aurora and crippling the telegraphic services worldwide, even at near-equatorial locations.

A large sunspot group which was flare active on the Sun's far side, had quieted down significantly when facing the Earth a week later.

Despite bad seeing conditions, the H-alpha solar telescope of the ROB/USET was able to observe the X-class flare of 24 April.

Multi-vantage point observations, using combined imagery from multiple spacecraft and ground stations, shed light on some puzzling aspects of the evolution and flare activity of NOAA 4436.

Currently, there are more than 30.000 tracked objects moving in a Low Earth Orbit. More than half are space debris and may pose a threat to the operational satellites and payloads.

SIDC Sunspot Group 825 (NOAA Active Region 4419) was the source of 2 X-class flares produced on 24 April. The analysis of the associated CMEs is ongoing.

GONG, the Global Oscillation Network Group, is celebrating its 30 years of providing high-quality helioseismic and magnetic data for the benefit of solar physics and space weather research.

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.

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.