Death Star 2 6-9 is the ninth level of Death Star 2. To pass this level with three stars, you should pop all pigs and score at least 68,000 points.
Launch Princess Leia up high around the very top battle station. Use her tractor beam between the gaps in the iron beams, aiming at the bottom right structure. This should dislodge the structure and blaster gun and finish off the level.