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Safely meaning they wouldn't have to feel a G force over 2Gs. Assuming we had technology to reach any feasible speed under light speed. Also, how long would it be relative to Earth?

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marked as duplicate by Rob Jeffries, heather, John Rennie general-relativity Feb 7 '17 at 8:19

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  • $\begingroup$ A basic calculation is possible using these equations. Note that how long depends on whether you mean from the traveler's point of view or Earth's - time dilation. $\endgroup$ – StephenG Feb 6 '17 at 22:28
  • $\begingroup$ Getting rid of G-force using e.g. strong magnetic fields perhaps also involving implanting magnetic materials in the body seems to be technologically trivial compared to the challenges of interstellar space travel. Such a technology could also allow for a spacecrafts to make a hard 100 G landing without the astronauts getting injured. $\endgroup$ – Count Iblis Feb 6 '17 at 22:48
  • $\begingroup$ Also physics.stackexchange.com/questions/109776/… $\endgroup$ – Rob Jeffries Feb 6 '17 at 23:23