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Generate QuizSolar sails propel spacecraft using momentum transfer from reflected photons, achieving continuous acceleration without propellant.
- True - demonstrated by IKAROS/LightSail
- False - theoretical only
- True - but requires laser beaming
- False - violates conservation laws
Answer: True - demonstrated by IKAROS/LightSail
IKAROS (2010) and LightSail-2 (2019) validated photon pressure propulsion; enables indefinite missions limited only by sail degradation/orbital mechanics.