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Treasures from the past - precursors for solar physics

Solar physics at the ROB has deep roots going back as far as the late 19th century. It involved a first promising era of solar studies, owing to Dr Eugène Jean Hubert Spée, followed by a 33-year long hiatus.

Sweet but a little bit psycho

An at first sight simple and symmetric sunspot produced a series of C-class flares. For the moment, none of the associated coronal mass ejections seems to have an earth-directed component.

Dynamic NOAA 2738

A big but quiet sunspot is transiting the solar disk. Photospheric lightbridges over this sunspot are continuously giving it a different appearance.

Preliminary prediction for the new solar cycle 25

An international team of researchers has issued a preliminary prediction for the upcoming solar cycle 25 (SC25). The strength of the new cycle is expected to be similar to the still ongoing solar cycle 24 (SC24).

Space junk

The space debris from an Indian satellite, destroyed in-orbit during a test with their anti-satellite missile system on 27 March, has raised concerns about the potential impacts on other satellites.

A new load of space meteo operators

8 enthousiast meteo operators followed the STCE course to get transformed to a space weather operator. From March 14 onwards, they carry the title 'Trained and certified space weather operator'. The STCE space weather bulletin has no secrets anymore.  

GLEs and the solar cycle

Ground Level Enhancements: what are they, what impacts do they have on us and our technology, and when during the solar cycle do they generally occur?

Almost No sunspots in February

 

No sunspots sliding from left to right, no sunspots popping up. February 2019 was almost the first spotless month since a decade. Almost, because the exercise done each first of a month to calculate the sunspot numbers of the previous month, the World Data Center for the sunspot number, put the provisional daily sunspot number on February 13 and 11 not to zero.

The best of... 2018!

A  compilation  of  the  most  memorable  space  weather  moments  of  2018, featuring data, links and movies.

Feeling the heat!...

Solar Orbiter, due for launch in 2020, is an ESA mission to perform close-up, high-resolution studies of our Sun and the inner heliosphere. The spacecraft has been tested in the thermal-vacuum chamber at the IABG test facility in Ottobrunn, Germany.

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