Earlier today, the Huffington Post released an article online. Two physicists at NYU, David Ruffner and David Grier, have created a working tractor beam. It's a small scale device using two Bessel beam lasers (also invented by the pair) that operates like a conveyor belt, pulling the object toward you.
Just one problem... a ship-mounted one would require enough power in the laser to destroy anything you'd be towing. So, for now, it's small-scale only.
CHARACTER GRID (@Lord-Ice): ___ |___ _ Fed ____| ____ _KDF __ ____| Rom Tac_|_Thomas Hale_| __ __Illusion _____| Silence (K) Eng | ___Antilles _ _| _ Mirror Rygobeth__| N'Vek (F) Sci _| __ Rygobeth _| _Lukor Son of Q'Tar | Devala (F)