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

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 cum 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!!!

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).

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

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.

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.

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.

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.

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.

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.

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'.