Space: The first solar sail

"The Planetary Society has teamed up with an international team of scientists and engineers to build and fly Cosmos 1, the very first solar sail. This is the first space mission of a public interest organization and it is being done without government funding....Solar sails can be used to boost or decrease the orbits of spacecraft, travel between the planets within our solar system, and someday take us to worlds around other stars." -- from the website. <http://www.solarsail.org/>