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comment by Odder
Odder  ·  1501 days ago  ·  link  ·    ·  parent  ·  post: Faster Than the Speed of Light

Well, they could come home, but everyone they would have ever known would be long dead. And building a ship capable of a constant 1g acceleration is... nontrivial. Also, collisions with even minor space junk would be catastrophic.

Mathematically, it is possible, though.