Yellow spheres over OgallalaMy husband and I were sitting on our deck watching the fire off their fireworks tonight and the first sphere we saw we thought was part of the fireworks but we noticed it never burned out or fell to the ground but stayed in the sky and traveled east to west in the southern sky. About one to two minutes later we spotted another sphere traveling in the same direction at the same altitude and speed. We followed it as far as we could but them lost it in the tree line. They were both yellow speres, no sound, and traveled at the speed of a small plane. We live close to the airport and we know the what small planes coming in to land look like and these we not planes. They were very bright, no flashing lights, just a yellow spheres. We have seen these before but have never seen them flying so low or so slow.