Okay, I know there are many threads about this and I checked some like https://www.physicsforums.com/showthread.php?t=38157" and some more, but I don't found what I was looking for. Okay, let say we have a light cone http://img7.yfrog.com/img7/6463/lightcone3.jpg [Broken] Where Vertical and horizontal axis representing time and space respectively and L1, L2 & L3 represent path allowed for massive bodies, light and path not allowed respectively. We travel at a speed that relates to path L1. If we are stationary we'll just go through time, but no space. Now, let's say we start to increase speed and time starts to dilates. The more speed the more dilation. At speed of light (which I know to reach is not possible atleast until we have much more advance technology) time ceases. Why? Because equations shows it. But what if we look at it in a different way? Time ceases because we are traveling at the rate at which time changes.. So, as we are also changing at the same rate, the time doesn't change according to our perspective. Does this means that time travels at speed of light?