A Shiny (metalic) sphere was seen, by me, above a ridge. It was slowly moving away from my position at an altitude of apr. 500ft. The Sphere instantly vanished or moved faster than i could see.I was on a houseboat on Lake Navajo in New Mexico, June 15, 1998. At about 11:00am the weather was partly cloudy and very windy from the NW. I was watching an eagle soar over a ridge about 800 ft away. That is when i saw a shiny, silver, metalic object (perfectly round). It was slowly moving to my left and away, in a N to NE direction (against the wind!).I could tell it was moving because it was just over a ridge and i was stationary, the houseboat was moored. The object appeared close, about 1/8 to 1/4 mile, because it was in front of cloud formations. I watched the sphere for about 10 seconds. It was shiny on top and shaded below just the way a ball would be illuminated from an overhead sun. It also appeared to be spinning. Suddenly it vanished, so quickly as to give the illusion of imploding to nothing. If it moved, it moved to quick to see. As a side note: On our drive from Albuquerque to Navajo Lake my wife saw a simular ball but only for a couple of seconds. She too said it vanished quickly. I am including my artist rendering of the scene that day.