The idea of fast space travel by a sail struck by lasers from Earth has been mentioned a few times on this board.
This is an I Interesting short YouTube by the Angry Astronaught on photon drives: A large sail powered by powerful lasers & capable of reaching 0:2 x (velocity of light) (21:24 minutes) being proposed by Caltech:
https://youtu.be/qL_4E6I9qNg?si=Vrn5flNEkPnJ05bv
There are many limitations, but also some amazing potential.
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Fast space travel by laser impulsed sail
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odysseus2000
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