Article Images Daily life   Astronaut Claude Nicollier, mission specialist from the European Space Agency (ESA) uses one of the Hubble power tools in a storage enclosure during the second of three STS-103 extravehicular activities. Photo: NASA   ESA astronaut Wubbo Ockels prepares for sleep in the special sleeping bag he designed himself in response to the feeling of disorientation astronauts get while sleeping in zero gravity   Even in space - you have to brush your teeth!   Astronaut Umberto Guidoni, STS-100 mission specialist representing the European Space Agency (ESA), exercises on a bicycle ergometer on the mid deck of the Space Shuttle Endeavour. (Photo: NASA) Last update: 19 July 2004