The Planetary Society is about to launch their LightSail2 spacecraft on June 24th. Carried in to orbit by a SpaceX Falcon Heavy rocket, this breadbox sized satellite will deploy a 32 meter square mylar sail to use as propulsion to raise its orbit. If successful, it will be the first spacecraft in Earth orbit to solely use sunlight as a means of propulsion. Full article at the Planetary Society HERE.
Images Source: Planetary Society