While time travel in science fiction relies on the use of technology, usually in the form of a time machine, time travel in fantasy does not.

Scrooge's time-traveling in A Christmas Carol relies on magic.

The difference between science fiction and fantasy, as defined by Asimov, is that sci-fi is possible while fantasy is not.

I strongly believe that time travel is possible because of follwing reason .

1) Space and time theory make sense
2) Astrology :
I think it can give us a clue ,how can anybody predict what will happen to a person with his age and location .Astrologer have done that from time to time .they can predict a person,place as to what will happen in another 5 year or 10 year .How do they came to conclusion .They do that after reading star's and "Something" .

sandeep