news
Submitted on 2020-05-19
Bright faculae fields appeared near the east solar limb late on 16 May. They belong to the new solar cycle but alas, so far, they have remained spotless.
Submitted on 2020-05-11
Dynamic prominences were visible at the solar limb from 8 till 10 May.
Submitted on 2020-05-05
The last days of April, the Sun was adorned by four small sunspot groups. Three of them belonged to the new solar cycle 25.
Submitted on 2020-04-28
On 20 April, a minor geomagnetic storm ensued following the impact of a slow but potent interplanetary CME. Due to the lack of an obvious on-disk source, the weak nature of the CME, and data gaps in coronagraphic imagery, both the impact and its strength came as a surprize to space weather forcasters.
Submitted on 2020-04-21
A compact eruption near the northern polar coronal hole took place on 13 April. It was associated with a fast and narrow coronal mass ejection.
Submitted on 2020-04-15
Your favorite antidote against the corona boredom has arrived! Counting sunspots had already been turned into a citizen science project "Val-u-Sun" last year, but is now also available in Nederlands and en Français!
Submitted on 2020-04-08
NOAA 2759 was a small sunspot group from the new solar cycle 25. Using the JHelioviewer software, some movies were created showing the 5 B-class flares that it has produced during its transit so far.
Submitted on 2020-03-31
Staying with the buzzword of our times, the word "corona" is being used very often in astronomy too. An overview.
Submitted on 2020-03-26
A compilation of the most memorable space weather moments of 2019, featuring data, links and movies.
Submitted on 2020-03-17
Based on the location and number of high-latitude sunspot groups, as well as the current level of sunspot numbers, a solar cycle minimum between September 2019 and February 2020 seems very likely.
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