General Support to Technology Programme (GSTP) Luxembourg has been participating in the optional General Support Technology Programme (GSTP) of the European Space Agency (ESA) since November 2005. GSTP activities aim at the pre-development and - if needed - the qualification via in-orbit demonstration of identified critical technologies required by future space missions. The feasibility of those technologies has been demonstrated in the ESA Technology Research programme (TRP), one of ESA's mandatory programmes or in national or international R&D programmes. GSTP activities cover all ESA domains plus Generic Technologies, excepting Telecommunications which has its own programme (ARTES). The themes to be addressed may in particular include the following: Earth Observation; Science; Robotic Exploration Preparation; Human Spaceflight and Exploration Preparation; Space Transportation and Re-entry Technologies; Navigation; Security for the citizens including Space Situational Awareness; Generic Technologies and Techniques, including cross-cutting technologies such as Clean Space (in particular CleanSat), Advanced Manufacturing, Design to Produce and Space Technologies for Energy; Preparatory activities for the e.Deorbit mission and technology developments in the relevant fields; Technology transfer. The detailed activities related to the above subjects are defined in work plans submitted to the participating countries. These plans are complementary and coherent with other existing preparatory and support technology programmes. GSTP is split into 3 elements: Element 1 "Develop": Technology developments for future missions, ground applications and tools, Element 2 "Make": Development of technology and products for commercial sustainability, Element 3 "Fly": In-orbit demonstration of new technologies, preparation of future missions, small missions.