Many thanks to our astronaut guests for giving their time to #OpenESTEC, we’re sure you’ll agree they all helped make today a very special day! A big round of applause for Mike Foale, Dirk Frimout, Ernst Messerschmid, Claudie Haigneré, Ulf Merbold, Dumitru Prunariu, Jean-Jacques Favier and André Kuipers!
