I saw this movie many times when I was growing up and was fascinated by the concept. I must have seen this movie at least a dozen times and I am now in the process of purchasing this DVD through EBay. I just noticed some very close similarities between parts of this movie and Director George Pals, "When Worlds Collide". The parts that look to be similar are when they are building the spaceship. My best guess is that the Director of "The Time Travelers" copied this part from "When Worlds Collide". Nonetheless, this movie in my humble opinion is a classic for SciFi. I just wish that they considered a sequel. Are there any Directors out there would would consider a remake?