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Solar radio silence ended

The godfather of the solar wind: E. Parker

We have the honor to welcome E. Parker in June 2009 at the Solar-Terrestrial Center of Excellence. This will be an occasion to speak to the world's top expert on the solar wind. It was in the 1950s that Parker developed his theory about the solar wind. In the perception of many, his name is a synonym for solar wind. Parker suggested that the corona, the exterior part of the solar atmosphere is continuously expanding. This spherically symmetric expansion is called the solar wind.

Top Ten of ... 2008!

A compilation of the most memorable space weather moments of 2008 can be found underneath. Using the fantastic (J)Helioviewer software, a ***MOVIE*** was created containing one or more clips of each event. Usually, images obtained by SOHO and the STEREO spacecraft were used.

A first radio burst at Humain

The European Space Weather Week: the final result

The Sunspot Number clarified

The sunspot number is the oldest index for solar activity. The International Sunspot Index is the sunspot number calculated by the World Data Center for the sunspot index. The number has different appearances depending on the extent of the used data, the date of calculation, the time period over which we take a mean, the used method. We briefly present the different daily sunspot numbers.
Click on the titles to get the info behind it.

Partial solar eclipse observed in Belgium

A new camera recently installed at the Uccle Solar Equatorial Table spotted the Moon in front of the Sun at 13:13. The picture was taken in normal visible (white) light, to study the photosphere of the sun. Note the complete lack of sunspots due to solar minimum.

Solar cycle 24 sunspot

A second sunspot of solar cycle 24 popped up on April 13, 2008.

First light

On January 07, 2008, a brand new camera from the Uccle observatoria catched the Sun in the H-alpha wavelength.

A first cycle 24 sunspot

On Jan 4, 5 observatoria of the SIDC world wide network noticed a high-latitude sunspot with a magnetic configuration associated with the next solar cycle.

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