Close Encounters: Fact or Fiction

Detection of a radio signal (but no visual contact)

Evidence of extraterrestrial existence through identification of an artificial, coherent signal with a radio telescope, distinct from the background of various natural phenomena that also produce radio waves.

Close Encounter of the First Kind: Sighting

Visual sightings of an unidentified flying object seemingly less than 500 feet away that show an appreciable angular extension and considerable detail.

Close Encounter of the Second Kind: Evidence

A UFO event in which a physical effect is alleged. This can be interference in the functioning of a vehicle or electronic device; animals reacting; a physiological effect such as paralysis or heat and discomfort in the witness; or some physical trace like impressions in the ground, scorched or otherwise affected vegetation, or a chemical trace.

Close Encounter of the Third Kind: Contact

UFO encounters in which an animated creature is present. These include humanoids, robots, and humans who seem to be occupants or pilots of a UFO.

Close Encounter of the Fourth Kind: Abduction

A UFO event in which a human is abducted by a UFO or its occupants.

Close Encounter of the Fifth Kind: Interaction

A UFO event that involves direct communication between aliens and humans. Bilateral contact experiences through conscious, voluntary and proactive human-initiated cooperative communication with extraterrestrial intelligence.

Close Encounter of the Sixth Kind: Death

Death of a human or animal associated with a UFO sighting.

Close Encounter of the Seventh Kind: Reproduction

The creation of a human/alien hybrid, either by sexual reproduction or by artificial scientific methods.

No evidence of extraterrestrial life whatsoever

We're alone out there or any form of extraterrestrial intelligence in the universe is too remote from Earth to establish contact in the next 80+ years.