Ok yes, thanks. 4-40 decades, so 40-400 years, as you say. Likely 40 years eventually, for the first trip, because no point sending a craft that takes 400 when

Ok yes, thanks. 4-40 decades, so 40-400 years, as you say. Likely 40 years eventually, for the first trip, because no point sending a craft that takes 400 when waiting results in tech that takes 40.