Cosmic Crystals 7-9 is the ninth level in Cosmic Crystals.The objective of level 7-9 is to use the birds to eliminate all the pigs. Get at least 54,000 points for 3 stars.
Corporal Pig can be tricky.
Getting 3 stars is quite easy because target score is quite low.
Send Bubbles between the trio of asteroids near the slingshot. Inflate when he reaches the middle, hopefully clearing out the left half. The mass of debris can make its way into the gravitational field of the eastern planet, popping both nearby pigs upon explosion.