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IKAROS sail deployment motor test successful These images, from one of IKAROS' four sail deployment monitoring cameras, show a small outward extension of folded sail under centrifugal pull from the tip mass connected to it, in response to a small motion of the deployment motor. The test was conducted on June 2, 2010, in preparation for the beginning of deployment of all four sails on June 3. ISAS / JAXA