I was in my backyard on a Friday night watching the sky at night as I often do when I saw this object heading east, this is not the first time I have seen objects in the sky. It had a very dull glow to it, if my eyes were fixated on the sky I would have never seen it. The dull glow of these objects give them cover in the night sky. I observed it for about 10 to 15 seconds and as it went over my house is accelerated at a very high rate of speed and veered off to the South. I guess I should state that it wasn't real low or real high but I could hear absolutely no noise and when it accelerated in turn I have never seen anything take off so fast in my life.I live very close to the Lemoore Naval Air Station and it was coming from that direction, also note I had seen one headed back that way also about 6 months ago with same glow but a different shape. The one I saw just recently was almost like a sphere With an odd shape on the side but when it turned it almost look like a wing and accelerated away. The one I had seen six months ago was more of a box type looking shape that also made no noise but that was much lower. I have also seen something similar to the box shaped object but at a much higher altitude going much faster..I believe with that with a dull Glo that they're almost transparent in the night sky and your eyes must be fixed on the sky to see them!