5 worst UFO sightings
Is it a bird? Is it a plane? No, it's a cloud. It's definitely a cloud.
UFO theorists went into overdrive when this video was released. It shows mystery sightings of figures in the sky, which look like imposing figures over Moscow, Romania, Florida and Ireland.
Unfortunately for sci-fi fans, Meteorologist Karsten Brandt explained the images in the footage weren't 'fakes, but explainable natural phenomenon'.
Andrew Baskeyfield from Rickmansworth, Hertfordshire claims he saw this bright white dot in the sky above his home one Monday evening.
He said that it was a 'round ball that seemed to be on fire' and 'I have never seen anything like it before.'
Mr Baskeyfield's admission that it was 'like something out a sci-fi movie' was appropriate, as we think he's been watching too many.
An opportune sighting of an unidentified flying object, caught in the background of a photo of a pleasant family gathering.
A shame for Sue Sill of Huddersfield that it appears to be a plastic bag and 'no one else saw it either'.
15 orange lights were spotted by many over parts of the UK last year.
Some (with more vivid imaginations) claimed they were definitely UFOs, whereas others were more inclined to suggest they were just Chinese lanterns.
Online excitement hit a frenzy a couple of years ago with the posting of this YouTube video.
It showed a pair of UFOs flying over Haiti, though believers were argued with by cynics who claimed it was an advertising campaign or a hoax.
It turned out to be a computer-generated clip, which was admittedly quite cool.