Here you will learn how to get three stars on world 2 level 1 of angry birds space
Three stars on angry birds space 2-1 is just a few moments away if you follow this easy to get walkthrough. Just the one bird is needed to get it done. Put your finger on the screen where the sling shot is and pull back. You need to aim just below the three upper ice blocks. This way the blocks will explode and take out all the other ice in the level as well as the pig. Also important to remember is that its not enough to take out the pig with one bird to get three stars. The picture can be clicked for a bigger version.
And there is a video below if you need it.