Time travel is arguably the most fascinating topic in all of science fiction. If you are a fan of science fiction consider for a moment your favourite movies, books and episodes of television shows.
Which were the best episodes of Star Trek for example in all of its incarnations? Which episode would you consider to be the absolute best out of all the series? Think about your favourite movies and decide which is best out of straight adventure and exploration, fighting off monsters or the mind bending stories involving time travel.
There are two directions of possible travel, namely into the future or into the past. The truth is that travel into the future is not a problem and can be accomplished in a number of ways some of which are practical and others which are theoretically possible given future advances in technology.
Time dilation as proposed by Einstein as velocity approaches the speed of light. This has been verified even here on Earth by clocks travelling in high speed flight or in orbit and also by observing cosmic rays.
Suspended animation by freezing or even hibernation which the bears regularly do.
The normal aging process which takes our consciousness into the future at the steady rate of one second per second.
Now factor in things like black holes, wormholes, folded space, string theory etc and we have many possibilities to consider.
Now time travel into the past looks on the surface to be impossible because of the many paradoxes that it implies. However the laws of Physics are symmetrical and there is actually nothing in the laws that prohibits backward travel in time.
It is the exploring of the paradoxes that breathes life into the whole concept of time travel. The best known one is of course any variation on the so called ‘grandfather paradox’. This is where the time traveller goes back in time and murders his own grandfather before he gets around to fathering his father which means that the time traveller was never born which means that he never went back in time which means that he never killed his grandfather which means…well you get the picture.
In my Time Travel Novels I have explored many variations on this paradox and others. One explanation is that there are an infinite number of universes so every possibility is allowed for. Another is the theory that an event becomes its own cause so that whatever the time traveller does in the past it was meant to happen in the first place in order to set his existence in motion.
Think about any time travel story that you have ever seen or read and you will realise that they all involve a giant circle which appears to close on itself. The trick is in trying to pick where the break is in the circle.[ad_2]