In Episode V, when looking for the Falcon, Vader tells Admiral Piett:
Admiral Piett: Lord Vader, our ships have completed their scan of the area and found nothing. If the Millennium Falcon went into light-speed, it'll be on the other side of the galaxy by now.
Darth Vader: Alert all commands. Calculate every possible destination along their last known trajectory.
Admiral Piett: Yes, my Lord. We'll find them.
In terms of a hyperspace travel, from one specific point, how many destinations it is possible to have? Does this phrase even make sense? How can they calculate every possible destination, and what would they do with it? It's not like they can travel to every possible destination...