Comex Space division manager Peter Weiss leaves his office before a training session in Marseille October 21, 2014. The underwater test session develops European expertise in spacewalk simulations under partial gravity for exploring the Moon, asteroids and Mars.The training is organised by Comex, a French company specializing in engineering and deep sea diving operations, in collaboration with the European Space Agency (ESA) and with Apollo XI 'Under the sea'. Picture taken on October 21, 2014. REUTERS/Jean-Paul Pelissier (FRANCE - Tags: SCIENCE TECHNOLOGY)