I think my understanding of STR might be wrong. I was watching a documentary where they said that if you're traveling at the speed of light then time stops. Now let's say I'm traveling through intergalatic space from the Milky Way to the Andromeda at 99.9% the speed of light. I also have my laptop and I am picking up signals about the events that are occurring in both galaxies. I can understand that those events that are occurring now in the Milky Way are events that I will never learn about. Any signal emitted to me from the Milky Way travels at the speed of light or less and since I am traveling at 99.9% the speed of light that signal will never reach me just as a car one mile behind me going 30 miles will never reach me if I am also going 30 miles an hour. I do not understand however why time should stop with respect to those events that take place in the Andromeda Galaxy. I am traveling towards it and am capable of absorbing bosons coming from that region of space. So why should the time in the Andromeda Galaxy stop?