ORIGINAL: TFOX
It can't shoot around the world in outer space because their is no gravitational pull to keep it going AROUND the world.
It would continue on out into outer space.
It would never come back around and hit you in the back,unless it hit a time warp then it would hit you yesterday.
Dont Satellites orbit the earth do to its gravity??
I guess with the proper trajectory and enough thrust you could make it come back and hit you... just a matter of figuring out the details..