They say if u travel at the speed of light in space for a few weeks u find out that in earth ur family is dead

Question

i read that if u travel at the speed of light in sace and ur watch only tells u that u have been in space for only a few weeks and then u *** bak to earth and find out u r int the future and ur family is dead and many years have passed.how can this be?pleez explain thaks!!!

Answer 1

I suggest you read Einsteins theories, these have been around for about 100 years.

The effect you refer to is called time dilation which has already been proved that it is a fact. Go to the web and do a search on that.

Next time please use a language which makes sense u don't.

Answer 2

Actually if you were REALLY going the speed of light and you would not perceive anytime until you slowed down. Time slows down as you approach the speed of light so if you were to attain the speed of light your trip would be nye instantaneous. This however is impossible as it takes more and more energy to accelerate closer and closer to the speed of light. It would take an infinite amount of energy to reach the speed of light so unless you got Jesus and some dilithium crystals it ain't gonna happen'.

Answer 3

You don't have to be gone for weeks.

If you were accelerated to a sufficient velocity, you could travel for a few seconds and be millions of years in the future.

As others have said, it's called time dilation.  The faster you go, the slower time passes for you.  Time passes at 50% its normal rate at .87c, for example.

Answer 4

according to Dr. Einstein as an object approaches the speed of light its time approaches zero. i don't know if a few weeks at C would result in the scenario you postulate, but certainly a few years might.

Answer 5

Read the book below...a few times.

The speed of light is the same for all observers. It doesn't matter what speed you are traveling or what direction, all light will measure at 300 million meters per second.

This leads to the the concept that space and time are not absolute. in other words your watch will run at a different rate as observed by someone else and you length measurement will be different.

Answer 6

Realtivity predicts that as anything approaches the speed of light its mass approaches infinity, its time approaches zero, and its thickness in the direction of travel also approaches zero. Since all these are physical impossibilities the conclusion is that any body with a nonzero "rest mass" cannot ever go *as fast as* light, never mind *faster than* as it is usually misstated.

But if you could actually attain light speed, even though ship time would seem normal to you you would get to the end of the universe - in terms of both distance and time - *instantaneously*, not after a few weeks, and *nothing* would be left when you stopped. From the point of view of an outside observer you would simply disappear, never to return.

Answer 7

yeah if you could travel at the speed of light without turning into energy.

Answer 8

I think the questioner wants to know why time slows down.

Einstein discovered that no matter where you are and how fast you are moving any experiement you do will produce precisely the same results as anyone else...even if they are moving more slowly.  This is important and has many implications.

For time slowing down understand that no matter who does the experiment, no matter their speed, they will measure the speed of light to be *exactly* the same as anyone else who measures it.

So you are in your spaceship moving along at 99.9% the speed of light and you do this experiment.  You send a photon of light to your receiver at the other end of the spaceship.  Thing is that receiver is moving away from the photon at 99.9% the speed of light.  The photon has to catch up to the receiver which is moving away.  If time did not adjust you would find it took a lot longer for your photon to arrive and hence you would measure a different speed of light than someone on earth would.  But that is not the case.  You measure the exact same speed as the guy on earth!

In order for the math to work out time needs to slow down (and distance contract) for the person moving at 99.9% the speed of light.  Now it seems to move at the same speed as anyone else who does the measurement.

Note that as far as you are concerened everything seems normal.  You will not notice the time dilation at all but the difference will become apparent when you return to earth where no one has been moving.

As other mentioned you cannot actually reach light speed.  If you did your mass would become infinite (so would take infinite energy to move), the universe would contract to zero width and time would stop for you (so you'd never return to earth...the universe would end before you ever did another anything).

Answer 9

At that speed your time comes to a standstill. But on earth years or centuries must have passed (I am assuming you are almost near the speed of light but not equal to it).

Answer 10

When you are traveling at the speed of light, you perceive time as you normally would, but to an observer watching you travel at the speed of light, you experience time more slowly.

It's a phenomenon called time dilation.