Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.
IKAROS with tip masses and cameras labeled A photo of the cylindrical IKAROS spacecraft during assembly is labeled with the location of one of four deployment monitoring cameras (red text) and two of four "tip masses," half-kilogram weights that will assist in the deployment of IKAROS' square sail. The tip masses are attached to the sail's four corners. A rolling stopper (black vertical bar across the folded sail) will control the rate of deployment of the sail by the tip masses. ISAS / JAXA