Now - they've intrigued star gazers and conspiracy theorists for years, but are there really unidentified flying objects out there carrying extra terrestrials?
Today the Ministry of Defence released its last ever UFO files, and naturally our region figures highly in the number of sightings. They're now being investigated by a former West Yorkshire police officer.. Here's Victoria Whittam.
More top news
Weather update for Yorkshire and Lincolnshire.
A court has heard claims that a mounted police officer saw Liverpool fans walking over others and crawling under horses to get into stadium
Safety failings on building sites cost the lives of eight workers and there were 450 major injury cases in the region over a year.