The "hovering orb" that turns into a bizarre shape-shifting object when filmed has appeared in YouTube videos captured across the world and been reported to various UFO websites, including the US-based Mutual UFO Network (MUFON).
One of the latest sightings to be recorded was in Elmbridge, near Gloucester, this month.
Rob Wheatman who recorded video footage of it said: "I saw it as a sparkling 'star' from the garden in Elmbridge, due south.
"What alerted me was an orange light that came from it and travelled at speed north east.
"I grabbed my video and luckily it has a 40x zoom and that's when I got the images of the bizarre light you saw."