Multi-colored translucent parachute-shaped UFO flashes briefly in the sky falling to ground, indiscernible size. Jellyfish-looking obje

Out jogging late at night on a country road near a power plant, seen a UFO...opalescent jellyfish in the sky lit up for a moment before disappearing, could have been an organism or an aircraft, seeming to fall down toward the ground and I could only make out a a clear, colorful parachute outline.  It had a life-like appearance such as a jellyfish with colorful skin, an exoskelton, etc. 
 Could only compare it to a jellyfish or a parachute, but I definately saw something different. Lots of radiation in the area due to the power plant if that makes any difference.