to go back to something means you've been there so your either talking about the movie or already know the answer.
in the unlikely event that your asking about time travel then you would, in theory, have to creating a wormhole and loop it to itself at a later time or by generating enough energy to fold space time around yourself and collapsing it back onto you; both attempts could theoretically destroy the universe
if the universe was destroyed the laws of physics would dictate that matter pop into existence due to laws of quantum mechanics and the impossibility of nothing. on a side note looping a wormhole into itself at a latter time is most easily done out of the two but the major flaw to it is any attempt to go into it would destroy the occupant due to acceleration and the limited hold of matter.
1955. November 5th to be exact.
twice
"Back to the Future" (1985) "Back to the Future Part II" (1989) "Back to the Future Part III" (1990)
Back to the Future, Back to the Future 2, and Back to the Future 3
Because he does not want him to die so soon.
You cannot.
You go back to the lab using your transporting device and turn the future machine back on. then, you go to the future and go up the elevator to the monorails and go to the future house where your future self will be waiting. He or She will give you the medal and you can just play around or go back home if you'd like.
The reason you should go back to college is to better your future. Going back to college will make it easier to get a better job in the future.
No, but there might be advancements in the future to go back in time.
yes, but it's the future, not the past. he comes back with you, and then he takes dusknoir and they go through the dimensional hole back to the alternate future.
no. we can't
2015,1985,1955 and 1885
Yes,you could go to the past and change the future. But you cant go to the past.
Travel faster than light?
1955. November 5th to be exact.
twice
It is the act of saving a webpage to go back to in the future.