Tracking SC25
The STCE's SC25 Tracking page has been updated to reflect the latest evolution of some critical space weather parameters for the ongoing solar cycle 25 (SC25).
news
ASPIICS is back in business!
After an anomaly onboard Proba-3's Coronagraph spacecraft led to loss of contact between the spacecraft and ground control last February, a tiger team worked relentlessly to get the spacecraft and its ASPIICS coronagraph back. Already in March they managed to re-establish contact with the coronagraph spacecraft.
After about 2 months of careful and gradual testing, a first formation flight was successfully performed last week. This was the moment of truth for the ASPIICS coronagraph.
Itchy NOAA 4455
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
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.
Stage fright
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.
USET observes an X-class flare
Despite bad seeing conditions, the H-alpha solar telescope of the ROB/USET was able to observe the X-class flare of 24 April.
The chronicles of NOAA 4436
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.
What floats around, comes around
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.
Double X-class flare
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.
Three Decades of Global Oscillation Network Group (GONG)
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.