Response to @thanos_shrugged: "You go back in time, you're in the middle of fucking space somewhere."
"This is actually one of the very first problems that I had with time-travel fiction: given that everything in the universe is moving, a traveler shifting between two points in time at the same point in space would wind up billions of lightyears away from Earth. One solution that I later imagined was the construction of what I called a 'bosonic transmitter', which would 26-dimensional broadcast a signal that could be received anyway in the universe and used to spatially relocate the traveler to Earth orbit. This was also my answer to the temporal version of the Fermi Paradox, which suggests that the absence of time-travelers in our past and present is evidence that time travel will never be solved in our future. In my scenario, travelers can only go as far back in time as the point that the bosonic transmitter began broadcasting its signal."