Dirty Time Travel
Short One way time travel
DTT is the the process of going at faster than the speed of light without using non-conventional propulsion. Not only is it extremely expensive and difficult to preform it is highly dangerous. It is called one way time travel because the return trip, traveling at relativistic(time dilating) speeds, is always fatal. Even without returning to your previous time, side-effects range from premature aging to hemorrhoids and there is a 25% chance of death.