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Date: 2015-04-23 18:08:10Interstellar travel The Planetary Society Spacecraft propulsion Private spaceflight Photonics Solar sail LightSail-1 CubeSat Louis Friedman Spaceflight Spacecraft Space technology | What is LightSail? • • • •Add to Reading ListSource URL: planetary.s3.amazonaws.comDownload Document from Source WebsiteFile Size: 2,75 MBShare Document on Facebook |