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Rigorous Science How to "set" the lightsail?

Suppose a starship is being powered by a lasers beamed first from the departure star, and then from the destination which is a moving base. The ship is moving in the regime of 10"“30% of light spee...

3 answers  ·  posted 8y ago by JDługosz‭  ·  last activity 8y ago by JDługosz‭

Question spaceships space-travel