The wind almost no wind, so it seems at first glance might seem that the balloons perhaps the move. Just as calmly levitate in the air. As the sun shines brightly in the sky you from east to west, looking in vain cloud, balloons act as a kind of mirage in the desert. In short, far and wide there was nothing, only the greenish grass, clear blue sky and three brightly colored balloons fairground, almost imperceptibly sway not too high nor too low to the ground. If under the balloons were not deep emerald green grass, but must be dry road or concrete, it might be to see their colorful shadows - both through the translucent colored balloons passes the sharp sunlight.
But because of the ubiquitous grass shadows balloons barely see, let alone could tell what color they are shadows. Seeing as balloons passerby, he would have thought that he's flying like perhaps a thousand years. Still more or less keeping the height and even sideways move too. Against the sun, it seems that the sun moves westward faster than balloons, and maybe it really is. Many a philosopher might say that the sun balloons race, but physicists would certainly refute. From the physical point of view because the balloons is totally uninteresting.