Original sentence: (For more on this effect, see twin paradox).However, special relativity offers the possibility of shortening the travel time: if a starship with sufficiently advanced engines could reach velocities approaching the speed of light, relativistic time dilation would make the voyage much shorter for the traveler
Edited sentence: (For more on this effect, see twin paradox.However, more speculative approaches to interstellar travel offer the possibility of circumventing these difficulties.Special relativity offers the possibility of shortening the travel time: if a starship with sufficiently advanced engines could reach velocities approaching the speed of light, relativistic time dilation would make the voyage much shorter for the traveler