Anyone fascinated by UFO sightings will be disappointed to learn that a leading expert has dismissed suggestions we have ever been visited by aliens from outer space.
There may be life out there, apparently, but it is just too far to get to Earth by spaceship.
Following reported sightings of UFOs there has been renewed speculation that aliens may be watching us.
But Dr Christian Kaiser, of the University of Southampton, said it is unlikely any can have made it this far.
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