Time Travel

I was at work yesterday chatting to one of my regular customers and he brought up the topic of time travel. Apparently he has spent years researching time travel and is therefore interested in any movie which has a mention of time travel (I work in a video store).



He has come across, over the years, a lot of evidence which suggests that people have come considerably close to doing actual time travel. In some cases people have time travelled but not survived the journey. I found it very interesting talking to him as he tried to explain to me how time travel works.
He told me how it all comes down to physics, the speed of light.....I did not quite understand as I did get into physics at school. He also believed that the UFO's etc. that people have seen are in fact people time travelling as that too would look like the lights in the sky of a UFO. And time travellers would also look like the aliens because of the special suits worn to protect them from harm while time travelling.
He had some interesting theories.
So I have decided to do some research myself to see whether I could back up his theories.

This is what I have found:

"Some scientists have proposed the idea of using faster-than-light travel to journey back in time. After all, if time slows as an object approaches the speed of light, then might exceeding that speed cause time to flow backward? Of course, as an object nears the speed of light, its relativistic mass increases until, at the speed of light, it becomes infinite. Accelerating an infinite mass any faster than that is impossible. Warp speed technology could theoretically cheat the universal speed limit by propelling a bubble of space-time across the universe, but even this would come with colossal, far-future energy costs." (Bosnor & Lamb)

I found this video clip, which the customer had mentioned:
http://www.youtube.com/watch?v=ViwcqNQk4BY
it tells of time travel which happened in 1943 and how it was covered up.

There seems to be many theories and being close to making a time machine which actually works like the Large Hadron Collider which
"the most powerful particle accelerator in history located on the border of Switzerland and France. In its 27-kilometer ring scientists are trying to collide beams of protons accelerated to nearly light speed." (Pravda, 2010)
but for this one to work it would need to reach at least the design capacity (now it is working at half capacity) and stop breaking down.

In an articleI found by Dr Michio Kaku he mentions that a guy called Kurt Goedel, who was perhaps the greatest mathematical logician of the past 500 years, found a new solution to Einstein’s equations which allowed for time travel but Einstein concluded that as the universe did not rotate Goedel’s solution could be thrown out for “physical reasons".

With all the research, and trying to find actual evidence, I found many theories and almosts but, besides the short YouTube clip, no evidence to say time travel had happened unless of course it is one of those issues which is always going to be covered up so we are never to be allowed to know about it?

Will time travel ever happen?
Will someone from our future turn up on our doorstep?
Or will it simply stay as a thing of science fiction films?



Bosnor, K & Lamb, R (N.A.). How Time Travel Work. Retrieved August 29th, 2012 from http://science.howstuffworks.com/science-vs-myth/everyday-myths/time-travel2.htm

Pravda, K (2010)Time Machine Built in Europe, Russian Scientists Say. Retrieved August 29th, 2012 from http://english.pravda.ru/science/tech/06-08-2010/114515-time_machine-0/