Is it true that if a person goes for space travel than he is younger than the person on earth when he returns?

Answer 1

yes, but only if the person traveling to space is traveling at the speed of light.

it has been proven that time slows down as one travels faster.

if, theoretically, you had a set of twins who were the same age, and one of them remained on earth while the other would board a space ship that was capable of traveling at the speed of light, the one on the space ship would return to earth and be years younger than the one that remained on earth.

to the person in the spaceship traveling at the speed of light, a few minutes would pass while the twin on earth would have several years pass.

unfortunately, we don't have anything that can even nearly travel at the speed of light, so it is impossible for us to do this.

but in theory, this is what would happen.

this is part of the theory of relativity that einstein developed.

Answer 2

Yes, and the faster they go the younger they'll be when compared to the person left behind. In a way this is time travel too. If the person who left Earth stayed away for 5 years while flying through space, when they returned to Earth maybe 8 or 9 years would have passed. All of this was doped out by Einstein.

Answer 3

Yes. The faster one travels the slower the travelers clock will run in relation to the "stationary" person left behind on Earth.
The traveler will have to go very fast and very far(faster and farther than any man-made craft has gone to date) in order to really see any difference.

This is only a relative function. Because the traveler will not see any difference in his clock time. The stationary person will also not see any change in his clock.
It is only upon the return of the traveler, when they compare clocks that they will notice that the traveler's clock is behind.

This experiment was done in the 1960's by placing atomic clocks on 2 different aircraft that went around the Earth in opposite directions. The relative speed of the 2 to each other was about 1100mph. The difference in time between the "standard" clock and the "travel" clock was barely measurable, but nonetheless the clocks were different beyond statistical probability.
The difference in seconds was about 0.000000000000001 of a second.

Answer 4

Yes this is entirely true the one astronaut who spent the longest on the ISS was something like 30 seconds younger than if he had stayed on earth. This happens either when one is travelling faster than normal such as approaching the speed of light, or when one is near a large gravitational force such as a black hole. Another thing that proves this is right is as someone mentioned before the Atomic clock experiment where they put two atomic clocks which were exactly the same at sea levels into planes and flew at different altitudes and the clocks were no longer the same.

Answer 5

The twin paradox, sometimes called the "clock paradox", stems from Paul Langevin's 1911 thought experiment in special relativity: one of two twin brothers undertakes a long space journey with a high-speed rocket at almost the speed of light, while the other twin remains on Earth. When the traveler returns to Earth, he is younger than the twin who stayed put.

Answer 6

Well due to the theory of the fabric of time space, the immense gravity of certain immense spacial objects such as galaxies, would be able to make you go through time faster than other people on the earth, and so you would be like a few seconds younger than them. However, due to the fact that we live in a 3 dimensional world, time, which is considered the 4th dimension, can't go backwards, because it is only part of the second
dimension in our reality. Thus time can only go forward, and so you can only grow like a second younger by going near the sun or something else stupid!

Answer 7

Only if he reaches speeds very close to the speed of light would this occur. Its not that the space traveller gets younger, but do to space time theory and all that, he ages slower as he is travelling. Everybody he knew on earth would be dead upon his arrival back on earth.

Answer 8

Einstein's Special Relativity Theory / Twin Paradox
(the time travel) does not have
any relation to a man / astronaut.
Special Relativity Theory only examines the behaviour
of a quantum of light / electron.
Twin Paradox ( the time travel)
has relation only to a light quantum / electron.
Twin Paradox has grown from Maxwell's theory / SRT.
And only an electron is a main and single hero
in the Maxwell's theory and SRT.
http://www.socratus.com

Answer 9

no not younger, like his age wouldnt reverse, he jsut would not have aged as much. LIke if he had a twin and the twin stayed on earth and he returned from space travel after four years or someting than he would have aged very little but the twin would age jsut normally.

Answer 10

yes as a result of realitavity theory it is true
t'=t*(1-v^2/c^2)^0.5
^ sign I used to show power for ex 2^3=8
*=multiplie
t'= time that has passed for the asronaut
t=time for a viewer that has no movement in any coordinate(we should consider a certain point at space as the origin of coordinates) it can be somewhere on the earth
c=the speed of light
v=the speed of astronaut

Answer 11

no, its a load of c r a p. these morons who think we are stationary while standing on the earth, know nothing. we are spinning 1000 miles an hour, we travel around the sun at 2 million miles a day. our solar system rotates around the galaxy at four million miles a day. the galaxy travels through the universe at 18 million miles a day. this means we are going over a million miles an hour. that is not standing still. einsteins silly little theory assumed we were standing still here on earth, and we obviously are not.