Solar-sail


noun
1.
Aerospace. a design concept for spacecraft propulsion consisting of a very thin, very large sheet of highly polished material that would be driven by the pressure of sunlight.
noun
1.
a device that reflects light particles from the Sun, gaining momentum in the opposite direction to propel spacecraft forwards
solar sail
A saillike device that is made of lightweight and highly reflective material and attached to a spacecraft to harness the radiation pressure of the solar wind and light for propulsion. Also called light sail.

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