Prepare for wave of extraterrestrial sightings in UK, say UFO experts

Unknown origins of three of four flying objects shot down over North America renews interest in contact with alien lifeforms

When unidentified flying objects began being spotted over the US and Canada, there was quite a stir among amateur ufologists.

UFO discussion forums lit up with theories about the origins and purpose of these floating entities - were they sent by intelligent lifeforms from outer space or was there an explanation closer to home?