the sail was still in orbit, NASA and Spaceweather.com announced a photography competition with a grand prize of US$500 to capture images of the solar sail in orbit. On 17 September 2011, the solar sail re-entered the atmosphere after 240 days in orbit, though this was only announced on 29 November 2011. See also NanoSail-D, the failed predecessor to NanoSail-D2, launched in August 2008 IKAROS, a Japanese solar sail, launched in May 2010 LightSail 2, a controlled solar sail CubeSat launched in July 2019 CubeSail (UltraSail), a sail technology demonstration launched in 2018 Near-Earth Asteroid Scout, a solar sail CubeSat launched in 2022 CubeSail, a planned cubesat sail mission Sunjammer, a solar sail that was cancelled before launch in 2014 References External links NASA NanoSail-D Mission page NanoSail-D dashboard Twitter page An index of images by astrophotographer Ralf Vandebergh created with a telescope mounted camera. information about NanoSail-D2 on eoportal.org Spacecraft launched in 2010 Solar sail spacecraft CubeSats Spacecraft launched by Minotaur rockets Spacecraft which reentered in 2011