On 11 July, ESA awarded a contract to Astrium to develop the two Sentinel-4 sensors. The ceremony took place at Astrium in Ottobrunn, Germany. Front row, from left to right: Prof V. Liebig, ESA Director of Earth Observation, Dr. E. Dudok, CEO Astrium Satellites, E. Settelmeyer, Astrium Director of Earth Observation, Navigation & Science. Back row, from left to right: Prof. H. Grassl, Atmospheric Scientist, Dr P. Ramsauer, German Minister of Transport, Building and Urban Development, E. Koenemann, Eumetsat Director of Programme Development.