Could UFOs be our descendants traveling back in time? How would something like that work? Is it even possible?
time travel
Australian scientists say they have "squared the numbers" of the grandfather paradox
The Philadelphia Experiment revisited?
The fastest human-made thing is NASA’s Parker Solar Probe, a spaceship sent to the Sun in August, 2018
The book was written by Michael Masters, a professor of biological anthropology at Montana Technological University in Butte
So many things are still waiting to be discovered...
The ‘grandfather paradox’ of time travel has been puzzling scientists for years