I was in my driveway and I happened to look up and I saw a bright ball of light pass overhead , very low. It first made me think of a comet but it had no tail following it and it stopped in mid flight and blinked out, then it reappeared and got really bright (Venus was is the sky behind me, so I know it wasn't it,but it looked like it) it moved slowly across the sky, very low ! It moved slowly up and it was kind of blinking and as I watched it went out completely. I never looked away or even blinked my eyes!! It was not a plane changing directions or anything that I have ever seen before. It made me uncomfortable enough that as soon as it disappeared I felt scared and ran into my house.the object I saw was a ball of light with a fog or haze around it , it seemed to fly silently and low to the ground, it had no tail or trail behind it. It stopped , hovered and then blinked out only to reappear in the same spot where it stayed still and became brighter than it had been at first then it moved very slow sort of blinking , bright to almost out, then after about 10 seconds it blinked out completely. It was the size of a Basketball when it first flew over me then when it blinked out and came back it was the size of Venus, only it no longer had the haze around it.