Hey guys, So, I'm writing a screenplay about space travel. I've been thinking of using nuclear fusion as the method of space travel. I've read it's a viable option. But, I don't know much about nuclear fusion. I know cold fusion is, at this point, a near-impossible option. But is it true that cold fusion means the reaction takes place in room-temperature environments? How would nuclear fusion affect space travel? How far could we go in the Milky Way? Exactly how long would it take to get somewhere else in the galaxy and how would that affect time dilation? Sorry for the vagueness. But, I'm looking for education in this matter. Thanks everyone!