Maybe you missed it, but Japan successfully launched the world's first solar sail craft a couple months ago. I know I missed it. I was just looking at Wikipedia for info about solar sails, remembering the disappointment of the Planetary Society's Cosmos 1 in 2005 and thinking that surely they'd tried something since then. I don't know how I missed it, but JAXA has already successfully launched a solar sail to Venus that demonstrated the ability to change attitude by adjusting LEDs on the sail instead of physically tilting the sail. more inside

No, you really CAN'T text and drive at the same time! . Take the test. Fail the test. more inside