This could be one hell of a hoax?
http://www.telegraph.co.uk/news/news...r-Kremlin.html
The object has been compared to an Imperial Cruiser in the Star Wars films and witnesses estimated it could be up to a mile wide.
Two film clips exist which appear to show the same object and footage has been repeatedly playing on Russian television news channels.
Video:
http://www.telegraph.co.uk/news/news...id=58063186001