basketball sized floating orb from 30 feet away hovering 3 feet off ground very bright and flickering light moving slowly

I am very skeptical about things i can't explane but this was to wierd to ignore i figured if this at least gets recorded sombody else could have something to go on. I happend to be looking out my garage window and saw the wierdest light moving towards my house down the street so i just sat and watched it for 15 minutes, and i noticed when it got in front of my driveway which was 25 to 30 feet away that as bright as it was it did not reflect light off anything, hovering 3 feet above the tar, no light reflected, it then stoped at the entrance to my drive way and made a section of my nieghbors yard light up as if it were glowing from underneath the ground, it did that for about 4 minutes then kepted on slowly moving down the street. about a week later i saw it again doing the same thing but only for 3 minutes. it made no sound at all.