首日封
Sobrescrito de 1.º Dia
EstoniaFirst Estonian Satellite
Date of Issue : 2 May 2013
ESTCube-1, a cubesat measuring 10 x 10 x 10 cm and weighing little over 1 kg is the first Estonian satellite and it is built in Estonia by students from Tartu University (coordinator), Estonian Aviation Academy, Tallinn University of Technology and University of Life Sciences. The satellite's payload has been developed in conjunction with Finnish Meteorological Institute and German Space Center (DLR). The main mission of the satellite is to test the electric solar wind sail, a novel space propulsion technology that could revolutionize transportation within the solar system.
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