Active blogs presently maintained, although update frequency can vary.

rosetta

Rosetta blog

Follow ESA's mission to Comet 67P/Churyumov-Gerasimenko

Gaia

Gaia blog

Launch campaign for ESA's billion-star surveyor mission

caves

Caves’ blog

News from the astronauts and the teams behind CAVES - ESA's underground training course

raumzeit-podcast

Raumzeit Podcast

Space podcast series produced in cooperation with the German Aerospace Center (in German)