Ok, they proposed the idea of using sails to travel in the cosmos (obviously not the first time come up with this idea.) But is this plausible? <br /><br />They said light leaving the sun mimics gust of wind in outer space.. (solar wind). The idea was to perhaps have a battery of lasers on the moon. And have a solar sail. Focus the many laser cannons of light on the solar sail and in theory that would propel the sail to maybe half the speed of light. Could this even physically work? Debunk?