Originally Posted by
Hyde
The only form of teleportation we're considering here is physically breaking down something and rebuilding it at another location, but we don't have to be quite so literal.
A pair of machines which open and maintain a wormhole through which objects can pass can also count as teleportation, although i'm not quite sure what would happen to time after you emerge from the second machine. Provided there is no time overhead during the passage through the wormhole, it is more or less teleportation.
To explain this better, wormholes that is.
Take a piece of paper, at one end draw a circle, at the other end draw another circle. Now draw a straight line between them. This is the fastest way we can currently get from point A to point B. But add external force and fold the paper, now the points are touching.
Theoretically, this is how wormholes work, they fold space/time. But no one is too sure if they're possible or even how they work, and they'd also require amounts of energy that we can only dream of.
So we have, destroying one copy and creating another, speed of light travel and wormhole travel.
Wormholes are really quite interesting, watch interstellar if you want a fun science fiction (the explanation is actually pretty solid) explanation of wormholes (spoilers??)
Light travel isn't at all possible, but what if we were to expand the space behind something and contract the space in front of it? The vessel wouldn't move, the universe would move by it. This is a warp drive and quite recently I believe some headway was made with this, if the science is correct this is a way to "move" faster than the speed of light.