Build structures to the Moon! Pick the time to build the next platform right in the middle.
Try to catch the small sphere right in the middle of the base. If you do it right, the structure will maintain its size as it grows. If you make a mistake, it will reduce its diameter, which will make it more difficult to elevate the tower upwards. Try to build your elevator all the way to the moon! Time it just right so that you build the next platform perfectly in the middle, or your range will decrease. Keep building until the structure becomes too unstable.