1. me and. my wife were in the bedroom when we heard a low pitch but still very noticeable humming sound. the sound went on for about 10 minutes before we got up to see what was going on outside. i discovered that my in laws had both been awakened by the sound. we stood outside waiting for the sound and when we heard it the entire sky lit up green for several seconds before fading away. my wife and father in law stood under the patio i stepped out in the yard and during the humming to look up, the entire sky was still green and several hundred feet above my was a extremely bright white light. my wife and i observed this once and my father in law observed it twice out of his window and once from the backyard. 2. the humming sound. 3. i have never seen anything like it. 4. it simply made a humming sound lit the entire sky up then stopped. did all of this 12:30-12:55 5. confused and fascinated. i am still waiting hoping the sound and lights will return so i can capture it on camera. 6. it just disappeared.