Time is on the y-axis and distance is on the x-axis and z-axis. Depending upon your velocity the cone is formed. At, let's say 1/10c, you can reach point "A" in ten years and your cone is narrow, but at 1/5c point "A" is 5 years away and the cone is wider. At 1/2c you could be at point "A" in two years and the cone is extreamly wide. Now here is my question. I see that point "A" is one year away. Correct? Now if you could and if you were traveling at c would it take you one year to reach point "A"? I see the cone at c to be a cube encompassing all volume to the future. If so, you would arrive at point "A" immediatly as you left. Where am I wrong? Is c still a cone? Is infinity(c) the cube that I see. (That's poetry) Anyway, if so it would also encompass the past as well? Now I am more confused than when I started. HELP!