'It's unidentified, flying and an object' UFO video baffles scientists
Astronomers have struggled to explain away the flying saucer – with a satellite, aircraft or meteorite apparently ruled out.
An amateur video – shot by an Aussie family – shows a bright orange light streaming across the horizon at sunset.
The UFO's tail is too short and thick for a meteorite and it appears too slow for space junk re-entering Earth's atmosphere.
Quentin Theron, 40, said his two girls, Kylie, 14, and Georgia, 8, were in the pool at home in Darwin when the kids shouted that they could see a shooting star.
Mr Theron, of Coconut Grove, told NT News: “I said: ‘That’s crazy. It’s too early and it’s too bright for a shooting star’.
Experts have been left equally baffled by the UFO.
Astronomer Geoff Carr told NT News: “I can only suggest a high altitude military jet with its afterburner on.
“Other than that it looks too slow to be a piece of space junk re-entering the Earth’s atmosphere.
“It may be an Iridium Flare – which is a large, cube-shaped communication satellite.
“These appear to flare up sometimes extremely brightly if at the right angle to catch the sunlight.”