NASA just successfully launched a solar-sail satellite from another experimental micro-satellite. It will demonstrate how it can take itself out of the space debris equation--by burning itself up.READ»
The world's first solar-sail-powered spacecraft, Cosmos 1, met its demise in 2005 when it fell into the ocean before ever reaching orbit. But dreams of solar sails propelling spaceships haven't died, and Carl Sagan's Planetary ...READ»
