When you select a ship and you move the mouse, the target hex is colored light blue irrespective of the number of moves the ship can move. I would like to propose that the highlight of the targeted hex might give a visual cue of the number of turns it would take to reach said target.
For example:
If the distance is less or equal to the number of moves the ship has left for this turn, color the highlight green.
If the ship can reach given target location before the end of the next turn, color the highlight yellow.
Any other distance, no change to the highlight - just highlight it light blue like it is now.
This would help in planning whether you can reach a location (planet/base) or evade an enemy fleet without counting the tiles to travel yourself. Of course the player will still need to check the movement range of the enemy fleets/ships himself.