These sails will be made of large ultra thin plastic sheets that will be propelled using sunlight instead of wind light particles or photons exert a small pressure when they bounce off a . Solar sails are made of ultrathin highly reflective material when a photon from the sun hits the mirror like surface it bounces off the sail and transfers its momentum. Not solar wind but rather light from powerful lasers would be the propulsion source in the 1970s proposal i mentioned in 7 they talked of lasers in close solar orbit that would accelerate the sail until it got out to about the orbit of jupiter achieving 1 3 light speed. Solar sails harness light photons on a large surface called a sail when light hits the reflective layer of a solar sail there is a force applied to the solar sail due to the lights enormous speed lasers can also be used to propel a solar sailed powered spacecraft
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