Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. The Planetary Society: Cosmos 1: The First Solar Sail Details about the June 2005 mission of the Cosmos 1 solar sail spacecraft, which is "a spacecraft without an engine — it is pushed along directly by light particles from the Sun, reflecting off giant mirror-like sails." Feature background information about this Russian-built spacecraft, images and animations, instructions for building a scale model of the craft, a blog, and other information related to the privately funded Cosmos 1 mission. From The Planetary Society. http://www.planetary.org/programs/projects/solar_sailing/ Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *