The following exert is an eye witness statement. Please read into it what you will. This has been reported to mufon who I am sure are investigating:
Around 6:55pm i came outside and finally could feel the temperature cooling down. i looked up into the sky to see if there were storm clouds in the area and just happen to notice an airplane on approach to phoenix sky harbor. then near by the airplane i saw a metallic orb. it was flying towards the airplane and they actually intersected. at that moment i realized that the metallic orb was actually closer to the ground and passed under the airplane. the object was traveling from north to south at a very good rate of speed. i could tell it was solid and did not have any fluid movement like a bird. it did not have wings or anything that would be propelling this object across the sky. i took out my phone a capture a quick video. what sucks about the videos is that it fails to show in great detail the perfect metallic sphere that was moving across the sky.