Would it ever be possible to travel forwards or backwards in time?

Question

If so, here are some events in history that need to be changed without letting people know that we are from the future.

1) September 10, 2001- Warn all airports to heighten security for the following day's tragedies.

2) November 21, 1963- Convince President John F. Kennedy to cancel his motorcade ride for the following day to prevent his assassination.

3) December 8, 1980- Before John Lennon and Yoko Ono get back to their Dakota Building apartment in New York, call the cops about a suspicious man (Mark David Chapman) who is loitering in front of the building to prevent the murder of John Lennon.

What if we went back in time to kill Hitler before he and the Nazis opened up the concentration camps?

Answer 1

I have to say that a kind of time travel is theoretically possible. see einstein's theory of relativity ( but that is a different question).
If time travel were possible then everyone would try to use it for their own purposes... good or bad.
Firstly, I think that time travel (even if it would be possible) should not be used to interfere with major past events, because u can never know what effect it might havefor the future. Just imagine o turk travelling back to 1529 and aidind Suleyman the Magnificent in his conquest of Vienna... the history of the world could well have taken a spectacular turn right "there and then".
Secondly, why do u reffer to events only in your own (pseudo)history? ... if u would really wanna change something u should look to events that had a much broader effect

Answer 2

Theoretically, according to Einstein's theory of Relativity and normal Physics, time travel is possible. There is a relation between motion and time. In theory, the faster you go, the slower time becomes for you. When you reach the speed of light, time stops. When you travel faster than light, you begin to go back in time.

Consider this story. Sarah and Sam are twins. Sam stays on earth while Sarah goes off in a spaceship with a velocity nearly equal to that of light, orbits a star and returns in what she thinks was one month. When she come back, Sam will be 5 years older than her.

That is the simple theory of traveling to the future. The practicability of this must be questioned. You can never travel as fast as light. With speed, mass increases a lot. By the time one reaches the speed of light, one's mass would have become infinite.

There is something called the Grandfather paradox. Suppose you travel so much faster than light that you land way back to the past, to the childhood of your Grandfather and kill him before he meets his future wife (your grandma). That would make it impossible for one of your parents to have been born and there would be no you in your grandmother's future. then, there would be no one to travel back in time and kill your grandfather later in your grandmother's future. But here you are, having done the deed. So, since later it implies that you never existed, who travelled back in time? A shadow, a ghost? See how confusing it all becomes?

Theoretically, time travel is possible. Practically, far from so.

Answer 3

186,000 miles per second, its NOT just a good idea, its the LAW! To the first, and simplest part of your question, the answer is NO. Consult the general theory of Relativity. (See link) That said, even if you COULD go back, you would play hell trying to alter the flow of events.

Answer 4

No I don't think it would ever be possible. In theory I think it could work, but it won't ever happen.

But you also have to think if you go back in time and change those things, what consequence would it have. For example what if you did worn people before 9/11, it would have change things. Would we maybe have a war on American soil instead of Iraq?

Just something to think about.

Answer 5

Well it could happen in like milleniums. Did you know you could travel time backwards if you were in the black hole?? So basically get the same components except not the dangerous killing and the black (even this has light) part.

Answer 6

the speed of light is a fixed thermo-dynamic law...there is no speed higher nor can there be....at the speed of light, the accelaration of time is at a set zero....the most outrageous possibility would be time standing still...postive change in acceleration could never send someone into the future, and negative accelaration could never never send someone into the past..

no, time travel will never be possible...

Answer 7

only in our minds. i love to go back and warn them what is going to happen. and give the people back there loved ones you know that would be greater than great

Answer 8

No