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# If you can travel faster than the speed of light can you then go back in time?

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###### 2012-01-25 04:12:22

Possibly. Photons have no age because they travel so fast. It is believed that a few certain subatomic particles (called neutrinos) can go faster than Photons, therefore they can go back in time. There are a couple websites you can look at that are all about neutrinos. Google neutrinos, and you will get many, many results.

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## Related Questions

Easy....travel faster than the speed of light...

No. By travelling FASTER than the speed of light, this might in theory let you travel back in time. However, it seems likely that neither travelling faster than the speed of light nor time travel is possible. Also note that a human being cannot travel at the speed of light; with a super-spaceship, we might in theory approach this speed, but not quite reach it. Only particles with "zero rest mass" (such as photons or gravitons) can travel at the speed of light (and, in a vacuum, they can ONLY travel at the speed of light).

Theoretically, as you approach the speed of light, time slows down. If you could travel faster than the speed of light, you might be able to warp space and travel back in time.

Nobody has invented a time machine yet. But Einstein said if you travel faster than the speed of light you will travel back through time.

There is many thoughts about time travel one theory is that if you travel faster than the speed of light you can see into the future and sort of 'jump' into the future and then travel one again faster than the speed of light to see into the past and then 'jump' back of course this is just a theory and has not been proven or said to be true and who knows the future seeing might take you to the wrong time so if your traveling back into the past you might go TOO far back to the past, no-one knows if this is true it has been tried but has been failed to go faster than the speed of light

Yes and No. Yes because traveling faster than light would make you go back in time. No because you would need an infinite amount of energy to go at the speed of light according to Einstein Also going at the speed of light or faster you would tern into light. So "you" could not go at the speed of light but light could. Time travel is possible but only at the earths gravitational pull (Turn) if the earth went backwards in spinning, but at the speed of light, the earth would move backwards through time as it broke the atmospheric compression field. WELL, AS IT HAPPENS... On a Distance against Time graph, the more distance you travel in the same amount of time, the steeper the line and therefore the faster your speed. The speed of light on such a graph is VERY steep, but it is NOT vertical. If it was a vertical line, then you would be travelling INFINITELY far distances in zero seconds. Which is impossible. However, assuming that it isn't, going EVEN FASTER would mean the line would start to curve back on itself, which would mean you were travelling a certain distance in a certain number of NEGATIVE seconds. Which would mean you were travelling back in time. So to answer your question, going faster than the speed of light would result in a VERY high speed. However, to go back in time you would need to go faster than a vertical line on a distance against time graph. In other words, to go back in time you would need to go FASTER THAN AN INFINITE SPEED. So, no you couldn't travel back in time by going faster than the speed of light. Even if you could, which you can't.

No. Anything EXCEPT for light that travels as fast or faster than light would need a near infinite amount of energy, and I expect that near all of us know that near infinite energy is and was only available when the universe was compacted to smaller-than-atom size, as it contained all the energy that's ever existed. Even if we did manage to travel at or faster than light-speed, we would travel back in time. That means the faster than light we travel, the farther back in time we would go. Knowing that, so far, we know for a fact that faster-than-light travel has not been achieved, as we would've had impacts on this time period. Some believe that the pyramids were built by alien's, but I believe that we were the ones who built it, but us from the future. Does this answer your question?

No. Speed of light is constant in all frames of reference, even if you are also traveling at the speed of light, the photon will speed away from you at the speed of light. When you see an object, what is happening is that photons are reflected off the object you are looking at and bounce back into your eye. However, if you are traveling faster than the speed of light, the photons can never reach you to start with, hence, you are invisible until your speed decreases to something below the speed of light. It is possible to travel faster than light in many ways. First, if you have a negative amount of energy, you will always travel faster than a speed of light. Another possible way is to compress the space in front of you, then move to your destination before re-expanding the space you have just past.

If it were possible to go any faster than the speed of light, you would see things happening before anybody else does, therefore technically, once we break the barrier for being able to travel faster than the speed of light (which is probably not possible), then yes, it is possible to time travel into the future. (By the way, the speed of light is about 300,000,000 metres per second - so good luck with this!!) However, it is impossible to ever travel back in time. I think I've answered this - hope it helps!

It depends on when you look back. Whether you look back while running or stop, rest and then look back makes a difference.

First of all, you have to travel faster than the speed of light, not sound, to go back in time. No aircraft can go that fast, or any other vehicle for that matter. At least, not yet. Second, it doesn't matter which way you're pointing, you just have to go faster than the speed of light.

It probably ISN'T possible, since nobody has managed to travel faster than the speed of light. However, if you travel faster than the speed of light, that is equivalent to travel to the past. That is, if from one point of view you get (for example) from here to the star Toliman in a single year (light takes about 4 years), then from another point of view you'll have traveled back in time. This would let you travel back in time first from one point of view, then back in time from another point of view; as a result, you could come back to Earth (for example), in the past. For more details, check the Wikipedia article or other sources on "Simultaneity", specifically the sections on the the Special Theory of Relativity. The Wikipedia article would be "Relativity of Simultaneity".

Since science don't know how it would be possible to travel faster than light, science can't tell what would happen if you'd get there either.But there is something called time dilation, which kicks in when you're travelling fast.Basically, the faster you go, the faster time would appear pass back home.So if you'd spend some time going at say 90% of light speed, a lot more time would have passed back home when you got back.One-way, kinda-sorta time travel I suppose.

Because it isn't real but if you travel faster than the speed of light you move ahead in time so therefore it is possible

The speed of light is the fastest observed speed in nature thus far. It is critical in Einstein's equation for the energy of matter E=mc^2, where E is energy, m is mass, and c is the speed of light. It is also important for its implications in astrophysics. Black holes allow no light to escape an area, but if one can travel faster than light, one could conceivably escape the hole. It is also speculated as possible to go back in time if one could travel faster than light, or to traverse space in a zero amount of time. Many of the implications of light speed have weight in quantum and astronomical physics and are still being investigated.

No, but because time and speed are relative the closer we get to the speed of light the more time slows down.

because you have to go faster than the speed of light to travel in space and since light is the fastest thing in the universe, you are technically going back in time

You can't, unless you have a time machine lying around or something. Although some scientists have a theory that if you could travel faster than the speed of light you could travel backwards in time. You wouldn't be able to get back again though!

the only way i know how to time travel is that if you started at earth and went for a huge distance traveling at the speed of light (299,792,458 meters a second or 186,282 miles per second) then when you come back to earth you would have traveled in time. But the problem is we have nothing that can go near the speed of light and a lot of scientists say absolutely nothing can go faster then the speed of light.

When you travel the speed of light everything around you is frozen in time but the further away something is from you the less of the effect. the light travels 9million seconds per second so that is why if you were to go back living our hours you would be very confused

Because you would have to travel faster than light, to be able to make it beyond our solor system and back before everyone on board dies. So far we can't even travel as fast as light.

It doesn't. Light travels at a speed of 300,000 km/second; sound travels roughly a million times slower. By the way, the light you see and the sound you hear in television doesn't travel as light or sound for most of the way - the information is encoded in a radio wave (which also travels at the speed of light). Only in the television set is the information transformed back into normal light, and sound.

If you were travelling faster than the speed of light then yes, but if you were not travelling at light speed you would not. Travelling at light speed can take you around the world 7 times a second.

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