How to get three stars on angry birds space wold 1 level 9
Not hard at all getting your three stars on level 1-9. The trick is that you need to push the pigs into the gravitational pull of the planet. You do this by shooting the first bird towards the middle of the cluster of debris in front of the pigs. As the bird closes in on the debris press the screen so it splits up into three and pushes some debris into the pigs
Watch the video to get a closer look at the whole thing.