Extreme Universe Space Observatory - Euso

The space mission "Extreme Universe Space Observatory - EUSO" is devoted to the investigation of the Extreme Energy Cosmic Rays (EECR) and of the High Energy Cosmic Neutrino flux. EUSO it is expected to detect of the order of 10³/year EECRs with E > 10²⁰ eV and to open a window into the High Energy Neutrino Astronomy. EUSO has been approved by ESA in march 2000 for an Accommodation Study on the International Space Station, with a goal for a three year flight starting in mid 2006. EUSO is a collaboration effort of research groups from Europe, Japan and U.S.A. EUSO, as an astroparticle space observatory, is unique in its class.