Frank De Winne brengt klas naar de ruimte   ESA astronaut Frank De Winne demonstrates an experiment during the 'Take your classroom into space' event.   ESA astronaut Frank De Winne demonstrates an experiment during the 'Take your classroom into space' event.   The schoolchildren also performed the experiment on Earth during the 'Take your classroom into space' event.   S128-E-010004 (8 Sept. 2009) --- Backdropped by a blue and white part of Earth, the International Space Station is seen from Space Shuttle Discovery as the two spacecraft begin their relative separation. Earlier the STS-128 and Expedition 20 crew concluded nine days of cooperative work on the Shuttle and Station. Undocking of the two spacecraft occurred at 21:26 CEST on 8 September 2009.   International Space Station Release date: 21 september 2009