for Space environment models. Radar (scientific payload): to provide radar observations of the Moon (radar observations from Earth are limited to the Earth-facing side of the Moon). Microwave Radiometric Sounder (scientific payload): a passive Microwave radiometer to measure thermal and dielectric properties of the lunar regolith. Technical facts The table below provides an overview of the spacecraft platform and the ground segment. Current teams Twenty-one teams from 19 European universities in ESA member states and cooperating states were part of the project. Led by ESA's Education Office at ESTEC, the project successfully completed a Phase A feasibility study and continued with the preliminary design during phase B. So far, more than 200 students have been involved in phases A and B of the ESMO project. Since November 2009, SSTL coordinate and supervise the work of the students, providing system-level and specialist technical support. Regular workshops at ESTEC and ESOC as well as internships at SSTL were organized to support the student teams in their ESMO related activities and provide training / knowledge transfer. Additionally, facilities at SSTL will be utilized for spacecraft assembly, integration and testing. As a major milestone during phase B, the System Requirements Review (SRR) for ESMO was performed in 2010. At SRR, the system requirements and system design were finalised. Part of the SRR also selected the university teams to participate in the following phases of the project. After passing a preliminary design review in March 2012, the program was ended as a result of budget constraints in April 2012. ESMO was to have been the fourth mission within ESA's Education Satellite Programme following SSETI Express, YES2 and the European Student Earth Orbiter (ESEO). References External links ESMO Homepage of the ESA Education Office SSTL Homepage - Lunar and Interplanetary Projects Cancelled spacecraft Space organizations