Quote Originally Posted by Rameusb5
The problem with your reasoning is that you have a constant velocity. You can't subject the Human body to very high G's for long periods of time. It'll take you a while just to accellerate to 1/2 the speed of light (to use your analogy). Ideally, you'd use around 1 G of accelleration to simulate gravity on your ship. The speed of light = 299,792,458 m/s. So to reach .5 lightspeed at 1 G would take 11.65 years! You'd need exactly the same amount of time to slow down as well.

Let's face it, extra-solar space travel using conventional physics just isn't practical.

Hence my concern about the sun burning out some 2-5 billion years from now. Will we be advanced enough to escape by then?
I know it was a very simplification, noting that E wouldn't be that much the problem, rather the speed itself.