LightSail first mission

LightSail launched to low Earth orbit May 20 aboard the same rocket that lofted the U.S. Air Force's robotic X-37B space plane on its fourth mystery mission. The cubesat was tasked with proving the viability of some key components of solar-sailing technology, which allows spacecraft to harness the momentum imparted by photons streaming from the sun. On this first flight, mission managers wanted to see how LightSail's core systems work — especially the gear designed to deploy its 344-square-foot solar sail. The overall goal was to pave the way for a true orbital solar-sailing trial by another LightSail cubesat, which is due to launch next year. (Fox News)

There are 4 days left to be a backer.  I am a backer and here is the link if you are interested.

https://www.kickstarter.com/projects/theplanetarysociety/lightsail-a-revolutionary-solar-sailing-spacecraft