Theoric question speed of light

• NoamRiahi
In summary, going to a star that is 10 light years away and looking with a telescope would show you the star as it looked 10 years ago because the time it takes for the light to reach us is 10 years, but if you were to travel to the star at or above the speed of light, you would see the star as it looked 10 years ago only if you were there for only 1.4 years. However, if you were to travel to the star at .99c, the trip would only take you about 1.4 years and you would see the star as it looked 10 years ago only if you were there for about 11.4 years.

NoamRiahi

if we look on a star that it something like 10 light years from us with a telescope we see the star like he look before 10 years because the time the light take to come to us, so my question is what happen if we go to this star in the light speed or more, we will see all the 10 years in high speed?
For example a star who creat before 10 years, we will see all the 10 year in fast speed?
im new in the physics area and i have many theoric question like that
and sorry for my english, this not my major lang ☺

Since it is impossible to travel at or above the speed of light, let's rephrase your question to use "just under the speed of light". Since it takes light 10 years to get here, then looked at classically it would then take you 10+ years to get to the distant star and during that time it would of course age another 10 years. SO ... you would see 20 years of aging in your 10 years of travel.

BUT ... that fails to take into account relativistic effects. If you were able to magically travel at .99c (and at the current level of our technology that would be magic indeed), the trip would actually only take you about 1.4 years. So you would see about 11.4 years of aging in 1.4 years and yes, that is a "fast-forward" on how the aging of the star would look to you.

TEFLing
Nice, of course i know its inpossible, but i only went to know if my brain understand it

Bandersnatch said:
Check out this game from MIT:
http://gamelab.mit.edu/games/a-slower-speed-of-light/
It illustrates the effects of moving close to the speed of light.
wow the video look good, but unlucky the 2 link doesn't work,this start to download by in the end this stop

NoamRiahi said:
wow the video look good, but unlucky the 2 link doesn't work,this start to download by in the end this stop
Works for me. Might be an issue with your internet connection.