Over 1500 students on Earth used good scientific practice and compared results to André's identical space experiments.
This once-in-a-lifetime experience brought together four European sites by videoconference: science centre Nemo in Amsterdam, the Netherlands, the Leicester National Space Center, United Kingdom, Parque de las Ciencias in Granada, Spain, and the Technik Museum in Speyer, Germany.
Before getting in contact with space, the centres demonstrated scientific experiments to each other. They created fire explosions and super thick foams to show students the footprints of gravity and physics in our everyday life.
The astronaut encouraged the children to satisfy their bubbling curiosity and answered their questions. Solar storms, blood circulation and the water behaviour in weightlessness were among the topics tackled.