Is it possible that we have ever been visited by ourselves from the future?

Answer 1

No, you can only go forward in time. If you were able to get in a spacecraft and fly as fast as the speed of light, stop get out and turn around you would be able to see yourself in the "past" getting into the spacecraft. Its like a star that has blown up. It happened many many years ago but the light from that is just now reaching us.

Go to this and it will explain :http://www.pbs.org/wgbh/nova/time/think.html

Answer 2

Possible...maybe; probable...not likely.

Time travel, forward and backward, is the stuff that makes good scifi; but, alas, it has no basis in current known laws of physics. In fact, things like worm holes, warped space, subatomic assembly and dissassembly, and so on are scientifically impossible according to current physics. At most, they are hypotheses...another name for WAGs.

The only feasible method for traveling to the future (kind of) is based on the proven fact that time on a mass traveling near the speed of light slows down relative to the outside. Another way to put this, because time is relative, time on the outside speeds up relative to time on the light speed mass.

Thus, one year passing on a space ship (the mass) traveling near light speed, would equate to hundreds or thousands of years passing on Earth...depending on just how fast the ship is traveling. So upon coming back to Earth and slowing to a stop, the space traveler would find all her friends and family had passed away years ago while she aged only one year. The space traveler would be a visitor from the past.

But before you go out to find a venture capitalist to build that space ship, understand that the same transformation that slows down time on the ship also increases the ship's mass by the same factor. Thus, near light speed that ship's inertia could be so huge that all the energy in the universe could not accelerate it one more m/sec^2. That is, there would really not be enough energy to accelerate a space ship close enough to the speed of light to make a significant difference in the relative times (inside and outside the ship). Thus, time travel into the future is improbable because of the amount of energy it would take to do it.

Answer 3

Probable. May be thats why we never get to talk to UFOs :-)
May be these things that we call UFO are actually probes from our own civilization but from future. :-)
May be earthlings from future time can only see the past (our present) but can't interact with it since time travel paradox might kick in. Events cant be changed or else it will contradict all events following the point of change. May be time travelers can only have a visual of the past and can experience past in real but can not change it.

Answer 4

The population of the earth would ,now and in the future act like the chain reaction in an atomic.
It would explode and disappear!

Answer 5

I would also say that it's physically impossible to altar such factors in time that would make this possible. I'm afraid we could only see this happening in sci-fi movies... I'd be interested in meeting my future self though.

Answer 6

No, but If I came back I'd make sure I came back with some winning lottery numbers and great investment tips.

Answer 7

No. Reverse travel in time is impossible. Forward travel in time is not only possible, but inevitable, although its rate can be altered.

Answer 8

Sure, it happens all the time. But we can only experience it as deja vue.

Answer 9

Check this out !

Answer 10

Nope. Reverse time travel is definitely impossible. Thanks for stopping by though.