saw a blue sphere moving over the of of a house in front of me--hovered 5 feet above the ground for an instant, 15 feet in front of me

As I was doing my paper route at 3:30-4:00 am HST, I had to walk to a porch on Laukahi St. as the streetlight was burned out and I couldn't see the porch from the street for a good, 100 ft. toss----I placed the paper on the porch and, as I was returning to my car, the surrounding area became illuminated in such a bright blue light that I could easily see everything around me as though it were daylight. I turned 180 degrees around and saw an object moving at a uniform distance above the roof of the house in front of me, about 2 ft. above the roof, coming towards me from the backside of the structure, and it occurred to me that it was maintaining a uniform distance above the roof as opposed to an arc over the house from the other side or a path that would lead it way past the house---it was 'hugging' the roof as if on purpose. The object was a sphere, maybe 1 1/2X the size of a basketball, emitting a VERY bright blue light but a light that didn't hurt my eyes as I watched it come over the roof to stop about 5 feet above the ground maybe 15 feet in front of me, between the house and where I was standing. It emitted NO NOISE, NO ODOR, and no noticable spinning or other movement---it just hovered there---I then began to think---I believe that all of my mental processes had ceased as I watched it, from complete amazement and captivation, with no fear or any emotion. However, as soon as I began to "think" about it, this object went from right in front of me to over the horizon, perhaps 1/2 mile away up the hill I was on, and disappeared. Again, NO NOISE ans NO anything---it just "left".
 As I ponder what I have seen, the most powerful part of my memory concerns the following: I believe that it would have stayed there in front of me until I began to "think" about it, and as soon as my brain kicked into gear, it took off at light-speed+ to get away from me, protect itself or whatever. It could differentiate between observation and analysis---these are just my feelings---no proof of anything, nor any harm done.
 I have decided to call it a "probe", something sent to gather inormation as I saw how it was hugging the roof-line as though it had a useful "range", and I would go farther to guess that what it "records" is brain wave activity or something like that---based on it's reaction to my "discerning" that it was there.
 I'd like to know the answer someday----you never can know for sure!!  Aloha,  ((name and address deleted))  Malulani St.
Kaneohe, HI 96744 ((personal data deleted))