I'm new, and basically just study physics as a hobby. I've yet to understand the mathematics, just the concepts. In studying spacetime contraction, I led myself to a paradox, which would leave someone both dead and alive. Let me explain. Say you were on a spaceship that could travel at light speed, and were going to one of the outer planets, or even further. Relative to you, spacetime has contracted to 0, and as a result, information along the trip was never part of the journey. Once you reach sub-luminous speed, you would begin recieving information again. Lets say that along the trip, your ship has an unfortunate encounter in the asteroid belt, and is destroyed. However, it would only be destroyed relative to a sub-luminous object, which sees your ship experience time, and impact the meteor. The result is an inconsistency in the information. Relative to you, you arrive at your destination unscathed, because the information about hitting the asteroid never reached you. However, relative to a sub-luminous observer, you died in the collision. Here's the conclusion I came to- Each object has it's own light cone. As soon as spacetime contracts, your light cone slows down, and at light speed, it stops. So during this trip, as soon as you reduce to sub-luminous speed, your light cone continues where it left off (the moment exactly when you hit light speed), and sometime in the future section of the cone, lurks the information about the collision. You basically become a ticking time bomb. And one day, you and your ship will spontaneously explode in the exact same manner as in the explosion in the belt, as the information about the collision passes from the future cone to the present point. So what do you guys think? Be gentle, remember, this is just my hobby.