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Q&A What percentage of stars would need to become Shkadov thrusters to move the whole galaxy?

The advanced civilization in my story is trying to reach as many galaxies as possible in the next few billions years before the expansion of space has sent those galaxies permanently out of reach w...

1 answer  ·  posted 4y ago by RandySavage‭  ·  last activity 4y ago by RandySavage‭

Question space gravity megastructures gas galactic