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A comment on LightSail 2 Spacecraft Successfully Demonstrates Flight by Light. Parent comment

Re:LightSail 2 Spacecraft Successfully Demonstrates Flight b... by comboy on Wednesday July 31, 2019 @06:15PM (#20579106)
This kind of technology had been demonstrated many years ago and many people around the world had been watching it at the time[1].

1. https://i.imgur.com/VL0Q9hT.gif

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