In the twenty-third century, humanity will live in colonies on many different worlds, all of them still within this Solar system. We will not be part of any league of alien cultures living peacefully among the stars, because even though we can move around the solar system in a matter of hours or days, the next nearest star is not close enough to reach in a human's lifetime, or even a hundred generations. We are caught somewhere in space, unable to leave this part of the galaxy, and no one ever really comes here for a visit. The recent discovery of our ability to move through time presents alternate ideas on how to reach alien cultures. The prevailing idea is that we could feasibly go back in time and meet any extraterrestrial culture that might have previously visited us, maybe at a time in our history when we were simply not evolved enough to understand the implications of such a meeting. The most likely candidate is the alleged crash of an alien ship outside of Roswell, New Mexico in 1947.