The Planetary Society
LightSail 2 to Test Solar Propulsion -- or Flight by Light -- in Earth Orbit
| Arthur Dominic Villasanta | | Apr 03, 2017 07:06 AM EDT |
As light reflects off a sail, most of its momentum is transferred, pushing on the sail.
Americans to Test First Spacecraft Powered by Sunlight
| Marco Foronda | | Jan 27, 2015 06:24 AM EST |
Solar sails are designed to capture the momentum from solar energy photons using large, mirrored surfaces.
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