01:35Alexander greets visitors to ESTEC Open Day
From the creator
ESA astronaut Alexander Gerst greets visitors to ESA's technical heart, ESTEC, on its open day 5 October 2014. From the International Space Station 400 km above us, Alexander introduces ESA's largest site where most of its satellites and missions are developed.
Published 2014-10-06 · Watch on YouTube ↗
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