we already have the artificial gravity(well spin a ship to make a 1 G centrifuge or with enough power, travel at a continuous 1 G, both accelerating and breaking, to simulate same...)
.....and with enough shielding radiation is no problem, as long as you have the power to push a heavily armored ship.
FTL.....ah. that's the problem. can we harness an Alcubierre bubble? or drill out a worm hole big enough to travel through??? Actually traveling FTL seems to be impossible...
