Dozens of sightings of UFOs in the skies over the South West are being debated at a conference on Saturday.
Believers say intelligent life exists on other planets
A picture showing something flying over Porthleven Beach in May this year will also be shown at the Cornwall UFO Research Group's annual meeting.
Dave Gillam, the group's chairman, said he expects to hear many stories of unexplained happenings.
He claims to have seen a number of craft himself, although he does not know where they are from.
Geoff Herbert, who will be attending the conference at Truro College, said he was very sceptical about many sightings, but is convinced there is intelligent life beyond our planet.
He told BBC News: "There are billions of stars and millions and millions of planets and life crops up wherever it gets the opportunity.
"I think there's somebody out there."