The Planetary Society’s LightSail-2 satellite, which uses sails to harness the energy of sunlight, is planned to launch 24 June aboard a SpaceX Falcon Heavy rocket
Source:
https://www.newscientist.com/article/2206973-spacex-is-about-to-launch-a-sail-propelled-through-space-by-sunshine/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home