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In theory, time travel can be accomplished by traveling the speed of light. However, the theory also states that travel at that speed is not possible.

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โˆ™ 2013-11-29 16:12:07
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Q: Can you travel into future or past by travelling at speed of light?
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Will you move into another galaxy?

Not in the near future. Other galaxies are hundreds of thousands, or millions, of light-years away; travelling at the speed of light, it would thus take millions of years to travel to most galaxies; travelling at a lower speed would, of course, take longer.Not in the near future. Other galaxies are hundreds of thousands, or millions, of light-years away; travelling at the speed of light, it would thus take millions of years to travel to most galaxies; travelling at a lower speed would, of course, take longer.Not in the near future. Other galaxies are hundreds of thousands, or millions, of light-years away; travelling at the speed of light, it would thus take millions of years to travel to most galaxies; travelling at a lower speed would, of course, take longer.Not in the near future. Other galaxies are hundreds of thousands, or millions, of light-years away; travelling at the speed of light, it would thus take millions of years to travel to most galaxies; travelling at a lower speed would, of course, take longer.


Is it possible to travel back to the past if we travel at 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).


Does electricaty travel at the speed of light?

Nothing can travel at the speed of light. Even in the future. You should also watch Stephen Hawking series.


If you were travelling faster than light could you still see an object in front of you?

You cannot travel at the speed of light. Period.


Will it be possible to travel a light year in a decade?

To travel a light-year in a decade would mean travelling at 1/10 the speed of light [if you disregard time needed for acceleration and deceleration. See discussion]. Current technology is nowhere near achieving this speed; while there are some speculations about future technology, for now, this is just that: speculation. It is hard to tell whether it will be possible in the foreseeable future.


How long will it take to travel from earth to Andromeda?

2.5 million years if you're travelling at the speed of light.


How do you travel through the universe?

You had better travel near the speed of light or you will not see much of the universe. Unfortunately travelling near the speed is not yet possible, so you are out of luck.


How many years would it take to cross the Milky Way travelling at the speed of light?

To travel at the speed of light it would take 100'000 years to cross the milky way


If time travel was possible could you in the distant future move several light years in a space by traveling close to the speed of light and than traveling backwards through time at regular intervals?

Indeed, time travel, and travelling faster than the speed of light, are intimately related in the Special Theory of Relativity. Looking at the situation from the other side, if it were possible to travel faster than light, then from some point of view, you would be travelling backwards in time. For more details, read about the definition of "simultaneity" in the Special Theory of Relativity.Probably none of the two is possible - travelling backwards in time, and travelling faster than light.Indeed, time travel, and travelling faster than the speed of light, are intimately related in the Special Theory of Relativity. Looking at the situation from the other side, if it were possible to travel faster than light, then from some point of view, you would be travelling backwards in time. For more details, read about the definition of "simultaneity" in the Special Theory of Relativity.Probably none of the two is possible - travelling backwards in time, and travelling faster than light.Indeed, time travel, and travelling faster than the speed of light, are intimately related in the Special Theory of Relativity. Looking at the situation from the other side, if it were possible to travel faster than light, then from some point of view, you would be travelling backwards in time. For more details, read about the definition of "simultaneity" in the Special Theory of Relativity.Probably none of the two is possible - travelling backwards in time, and travelling faster than light.Indeed, time travel, and travelling faster than the speed of light, are intimately related in the Special Theory of Relativity. Looking at the situation from the other side, if it were possible to travel faster than light, then from some point of view, you would be travelling backwards in time. For more details, read about the definition of "simultaneity" in the Special Theory of Relativity.Probably none of the two is possible - travelling backwards in time, and travelling faster than light.


Time to travel 56000000 million kilometers if travelling at light speed?

It would take you just over 5 years 9 months to travel 56,000,000,000,000 kilometers at the Speed of light, 299,792,458 meters per second.


Are there any galaxies that have travelled faster than the speed of light?

Travelling faster than the speed of light is not possible, therefore no galaxies have travelled or are travelling faster than the speed of light.


Can you travel through time in space?

Theoretically, it is possible to travel through time: by travelling at a great speed. But the speed at which you would have to travel would be faster than the speed of light, and would therefore kill every known living being.

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