Re: What is the future of humanity and space travel
Why the limit on the speed? As long as you have enough fuel, you can keep accelerating forever. The passengers will experience a constant acceleration as long as the "fuel" is "burned" at a constant rate, while those observing would see the acceleration decrease as the ship gets closer to light speed, relative to Earth.
It wouldn't pay to launch a ship that would take 40 years to get to the next nearest star. It would be better to use some of those 40 years to build a faster and cheaper ship.
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