I saw what I describe as a strange object in the sky skipping back and forth real fast then changing form from a brilliant blue pulsating light into a star burst object or similar to a firework explosion raining outward with multiple colors...the center remained a bright emerald blue sphere, with blue, red, white and green streams bursting from the top and bottom, then it transformed back into a bright blue emerald and repeated this process for 45 minutes. It was approximately maybe 7000 ft in the air, and moved back and forth in the same spot real quick. I tried to get a video recording with my cellphone but it couldn't capture the image.