Twelve-year-old David Freeman stumbles down a ravine and wakes up eight years later without having aged. The explanation is that David was taken on a quick trip to the planet Phaelon, taking 2.2 hours for him while eight years passed on Earth. Relativistic time dilation, right? That’s the explanation, but it doesn’t scan because Phaelon is a full 560 light years from Earth, so at least 1120 years would have passed on Earth unless the aliens truly did have some form of time travel. The clincher comes at the end when David explicitly travels through time. Conclusion: alien time travel technology.