The discovery of the enormous light sail tumbling across the solar system, the oumuamua object, led me to the Planetary Society's light sail project and then to the IKARUS project of JAXA, the Japanese space agency. They have demonstrated the feasibility of the concept and created a technology that seems to me quite advanced, opening up the possibility of managing the sail by controlling its reflectivity, its angle to the sun, and even the way to generate much electricity. Like a sailboat, it can move against the direction the wind, meaning that it can be used to go everywhere.
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