Another mystery sighting similar to the one over Borrego Springs, of a UFO, has been filmed, but this time over the city of Omsk, Siberia in the early evening of Nov. 17.

Described by eyewitnesses as 'scary but beautiful', the streaking fireball could be seen over a large swathe of territory across Omsk, Tyumen, Tomsk and Novosibirsk in Siberia and as far south as Astana the capital of Kazakhstan.

Yet no one has as yet provided a satisfactory explanation of what it is, only what it isn't. Astronomers at the planetarium of the Siberian State University of Geosystems and Technologies in Novosibirsk said of the sightings, 'It is definitely not a comet.'

One theory offered that 'the object was the second stage of intercontinental ballistic missile Topol launched at 15:12 Moscow time (or 18:12 Novosibirsk time) from Kapustin Yar cosmodrome in Astrakhan region.' According to the Russian news agency – TASS, stating that the missile hit its trial target at Sary Shagan, an anti-ballistic missile testing range in Kazakhstan. Yet many doubted that its route would take it over Tymen or Novosibirsk, which lies approximately 1,200km distant.

Vladimir Krupko, head of the city's planetarium in Omsk., said: 'I am 100% sure it was a launch. I saw a ring and a moving cloud. Most probably, it was the engine's discharge. Given the direction, it could be from Plesetsk (in northern Russia), but I can't find information about any launch, there is information only about a launch of a military satellite from Plesetsk in the afternoon.'

Following the Borrego Springs sighting just 14 days earlier seen over Southern California, was the Siberian UFO an "official" missile test or yet another cover up?