Is it possible to time travel according to Einstein's theory?

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SUMMARY

Einstein's theory of relativity indicates that traveling at speeds close to the speed of light results in time dilation, where time for the traveler slows relative to observers on Earth. Specifically, if an object travels at approximately 99.5% the speed of light, one hour for the traveler equates to ten hours on Earth. However, this phenomenon does not constitute "time travel" in the conventional sense, as it is a result of straight-line motion rather than circular motion. The concept of traveling at the speed of light itself is deemed impossible according to current scientific understanding.

PREREQUISITES
  • Understanding of Einstein's theory of relativity
  • Familiarity with the concept of time dilation
  • Knowledge of the speed of light as a cosmic speed limit
  • Basic principles of physics related to motion and velocity
NEXT STEPS
  • Research the implications of time dilation in special relativity
  • Explore the effects of traveling at relativistic speeds on time perception
  • Study the differences between straight-line and circular motion in relativistic contexts
  • Investigate the theoretical limits of speed according to modern physics
USEFUL FOR

Students of physics, educators in the field of relativity, and anyone interested in the scientific principles behind time travel and relativistic effects.

Razi Abid
Hello friends,
Einstein proved that if an object travels in a vacuum nearly at the speed of light, the result will be that the object will be transferred into future. One of my proffesors said that if a rocket travels round the Earth in space, with the speed of light for 1 year, then already a decade would have been passed on Earth. Is this TRUE, please justify.
with regards,
Razi
 
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Neither of those statemenst is true in the way "time travel" is normally understood.
The first is true in the sense that we are all "travelling" into the future (at the rate of one second per second!) all the time and that can be "accelerated". If you travels with a speed, relative to the earth, of approximately 99.5% the speed of light then you experience time changing at only one hour for 10 hours on the earth. After one year of travel, 10 years would have passed on earth. That is not exactly what I would call "time travel" or being "transferred into the future".

That is straight line motion. It is not at all clear (to me!) what would happen if you spent a year traveling in a circle at 99.5% the speed of light. Surely you professor did not actually say "at the speed of light"- that is impossible.
 
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sorry, i remember that my proffesor said that if we travel nearly the speed of light. I just forgot to write the nearly in between.
 

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