Could someone clear up light speed?

I have heard theories of how time travel can work by going faster than the speed of light. Is there anyone out there that can accurately describe how this theory works?Could someone clear up light speed?
Time travel is an interesting theory. According to Einstein, time only moves in a single direction, meaning we could only move farther into the future, but never travel to the past. The speed of light is the absolute fastest speed in the universe, nothing can travel faster than light.





However, the interesting thing is, if you could travel at the speed of the light, distance will shrink for you and time will slow down. This is called the Relativity Theory, composed by Einstein. So supposed you could travel at the speed of light, you could reach distances many, many light years away because the distance will be significantly shorter. Also, to your perception, you will experience days on your space craft even though it has been many years on earth.





Have you ever heard of this interesting scenerio regarding a pair of twins, with one of them traveling through space, and the other one remaining on earth? The one traveling through space will experience a few months of change, while the twin of earth will have aged for a few years. Time and space are not absolute numbers and will vary depending on the speed you travel!





With the question of turning on the headlight on a vehicle traveling at the speed of light, the headlight will also be travelling at the speed of light. Like I mentioned before, space and time change at such high speed. Nothing can ever travel faster than light!Could someone clear up light speed?
I wish I could draw a diagram here but I'll describe it. You draw it for yourself.





Draw perpendicular axes, horizontal is space, vertical is time. A 45 degree diagonal is the speed of light. For a moving reference frame, the axes are not perpendicular. They each slope inward toward the 45 degree line. Draw the new space axis 20 degrees above horizontal. Draw the new time axis 20 degrees from vertical.





Follow your original (at rest) space axis from the origin to some point. This represents infinite speed. Now from that point follow a line parallel to the sloped space axis (moving frame) back til you hit the vertical time axis. You will now be at a point below the origin on the vertical time axis. This demonstrates that you will return to your starting point before you left. (a point on the time axis below the origin is before the outgoing trip started.)





This will always occur whenever you allow speeds greater than the speed of light. They don't have to be infinite speeds. But your return trip must be faster than light relative to a moving reference frame.





Of couse, nature does not allow any travel faster than light!
you know I'm kinda interested too..not to make light of your question but if you were driving at the speed of light and turned on the headlights what would happen? that could stop time lol but seriously i would like to hear it as well...