Participants of initial 21 September 2015 tender evaluation board for CleanSat building blocks, which took place at ESA's ESTEC technical centre. Back row (left to right): Tiago Soares, Clean Space system engineer; Silvia Occhigrossi of Thales Alenia Space; Saturnino val Serra of Airbus Defence and Space; Jan-Christian Meyer of OHB; Muriel Tharreau of Clean Space. Front row (left to right): Adina Cotuna, Luisa Innocenti, Head of Clean Space; Antonio Gabriele, Clean Space system engineer.