The relative theory of Einstein, the faster the time will pass more slowly, when the speed reaches the speed of light time can go back. In fact, our study of this problem has not yet reached the point where it can be argued, then, in theory, the time really can go back?
Superluminal just a hypothesis, give a simple example, the stars we have seen, ask should know that the stars are stars tens of billions of light-years away. Theoretically, the light we see are tens of billions of years the prequel to come over, has been passed down now before reaching the earth and into people's eyes. That is to say, these things do not exist. If there is super light, then the theory can be seen in advance to see the light transmitted over the scene, inference, it is possible to see the light before the scene, which is the so-called time back.
Say a simple point, according to the theory of relativity, the faster the time, the more slowly, but the time will never go back, only a slow change will be very slow. There is currently two can not go beyond, one is absolutely zero can not be achieved, the speed of light can not exceed two, so the speed of light is not working.
In fact, human intelligence is not enough to stop the time of flying into; and, in theory, the clock back, back to the past is not impossible. According to Einstein's theory, time and space can be changed at the speed of light.
So, if an object is flying at the speed of light of 300 thousand kilometers per second, the space can be shortened, and the time can be slowed down. A physicist at the University of California, after calculating, said: "it takes 200 thousand years to reach the earth from the earth", and only 20 years on the speed of light. So is this wonderful thing going to happen? The answer is yes. Because scientists have discovered that the universe is faster than the speed of light and the mysterious particle.
Scientists found that when the spacecraft through the gravity field, the gravity force into the thrust force, the spacecraft during that time, you can travel at the speed of light and even faster than the speed of light. The experts from the National Aeronautics and Space Administration has created a "space-time field resonance theory", which is set up on the basis of Einstein and German physicist Werner Heisenberg's "unified field theory". The gist is: with the help of electromagnetism, gravity, light and temporal scalability co evolution, instantly across interstellar space.
By that time, perhaps we can prove that this century has been a problem!