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by pc86 3585 days ago
I thought the issues were:

  - navigation at any non-trivial fraction of *c* (not running into something that would obliterate the vessel)
  - slowing down and actually arriving where you wanted to and not overshooting it or stopping .5 LY away
1 comments

About slowing down, it's pretty predictable. The idea is even to run the ship in constant acceleration.

I don't think you'll want to actually navigate that ship. It's a point and go task. But if needed, you rotate the ship and keep accelerating. But I have no idea on how much you'd be able to fix your route after you discovered it is wrong.

I think the main issues are how do we make a ship where people can live for decades? And how do we launch it from the ground?