Last week, on 28/29 March 2012, the fourth European SpaceTweetup took place in Toulouse, France. A good reason to blog about the reach and numbers of such a communication measure. Plenty has already been written about the first European Space Tweetup, organised by DLR and ESA, which took place in September 2011, so I will - with some delay - now just concentrate on the numbers here. For any readers who want to know more about the SpaceTweetup and find out what it was all about, I recommend this or that blog article.

On 18 September 2011, German Aerospace Day, DLR and ESA staged the first European SpaceTweetup. A tweetup is an event in which users of the social media platform Twitter meet up. Together with ESA, we invited our Twitter followers to come and find out more about the European aerospace industry, meet scientists and astronauts and have a look at our research facilities and aircraft.